7Baggers

Westamerica Bancorporation
(NASDAQ:WABC) 

WABC stock logo

Westamerica Bancorporation operates as a bank holding company for the Westamerica Bank that provides various banking products and services to individual and commercial customers. The company accepts various deposit products, including retail savings and checking accounts, as well as certificates of ...

Founded: 1972
Full Time Employees: 737
Sector: Financial Services
Industry: Banks-Regional

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• Market Cap:
• Exchange:
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At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 
                               
      interest and loan fee income:
                               
      loans
    10,233,000 10,257,000 10,523,000 10,669,000 11,167,000 11,441,000 11,354,000 11,324,000 11,606,000 11,925,000 11,845,000 11,740,000 12,201,000 12,208,000 12,331,000 12,942,000 13,124,000 14,789,000 15,064,000 14,581,000 14,999,000 15,291,000 15,278,000 13,809,000 14,103,000 14,431,000 14,822,000 
      equity securities
    433,000 409,000 195,000 195,000 131,000 175,000 175,000 174,000 114,000 152,000 152,000 152,000 153,000 127,000 129,000 128,000 129,000 109,000 110,000 110,000 110,000 103,000 103,000 103,000 103,000 92,000 99,000 
      debt securities available for sale
    31,779,000 30,358,000 31,028,000 33,430,000 36,843,000 40,829,000 43,927,000 46,243,000 47,783,000 47,994,000 47,452,000 46,810,000 45,216,000 39,100,000 31,764,000 28,566,000 27,598,000 26,452,000 26,481,000 24,889,000 24,947,000 22,652,000 22,429,000 21,315,000 20,067,000 18,736,000 17,823,000 
      debt securities held to maturity
    8,355,000 8,370,000 8,448,000 8,494,000 8,538,000 8,587,000 8,655,000 8,722,000 8,799,000 8,848,000 8,930,000 8,980,000 9,061,000 6,625,000 1,771,000 1,644,000 1,824,000 2,091,000 2,362,000 2,598,000 2,793,000 3,235,000 3,616,000 3,908,000 4,209,000 4,535,000 4,924,000 
      interest-bearing cash
    5,988,000 7,840,000 7,273,000 6,703,000 5,659,000 6,762,000 4,961,000 2,283,000 2,690,000 3,929,000 2,110,000 1,942,000 2,567,000 2,742,000 2,002,000 479,000 366,000 369,000 259,000 138,000 112,000 84,000 113,000 856,000 1,396,000 1,901,000 1,958,000 
      total interest and loan fee income
    56,788,000 57,234,000 57,467,000  62,402,000 67,794,000 69,072,000  71,052,000 72,848,000 70,489,000  69,198,000 60,802,000 47,997,000  43,041,000 43,810,000 44,276,000  42,961,000 41,365,000 41,539,000  39,878,000 39,695,000 39,626,000 
      interest expense:
                               
      deposits
    3,285,000 3,453,000 3,045,000 3,229,000 3,262,000 3,113,000 2,460,000 2,106,000 1,635,000 1,095,000 582,000 458,000 463,000 470,000 461,000 452,000 479,000 473,000 466,000 459,000 462,000 450,000 424,000 434,000 444,000 447,000 478,000 
      bank term funding program borrowings
         2,278,000 2,692,000 843,000                    
      securities sold under repurchase agreements
    197,000 192,000 144,000 167,000 204,000 254,000 155,000 52,000                    
      total interest expense
    3,482,000 3,645,000 3,189,000 3,396,000 3,466,000 5,645,000 5,307,000 3,001,000 1,679,000 1,133,000 607,000 471,000 475,000 487,000 483,000 480,000 504,000 492,000 484,000 475,000 481,000 466,000 435,000 442,000 451,000 455,000 487,000 
      net interest and loan fee income
    53,306,000 53,589,000 54,278,000  58,936,000 62,149,000 63,765,000  69,373,000 71,715,000 69,882,000  68,723,000 60,315,000 47,514,000  42,537,000 43,318,000 43,792,000  42,480,000 40,899,000 41,104,000  39,427,000 39,240,000 39,139,000 
      (reversal of) provision for credit losses
      54,278,000 -550,000                        
      net interest and loan fee income after (reversal of) provision
                               
      for credit losses
    41,128,000 53,589,000                          
      noninterest income:
                               
      service charges on deposit accounts
    3,270,000 3,317,000 3,368,000 3,381,000 3,501,000 3,585,000 3,469,000 3,470,000 3,540,000 3,705,000 3,459,000 3,465,000 3,484,000 3,737,000 3,687,000 3,582,000 3,580,000 3,578,000 3,235,000 3,304,000 3,452,000 3,298,000 3,151,000 4,248,000 4,374,000 4,510,000 4,493,000 
      merchant processing services
    2,690,000 2,860,000 2,687,000 2,733,000 2,735,000 2,474,000 2,733,000 2,507,000 2,863,000 2,911,000 2,869,000 2,637,000 2,701,000 2,925,000 3,374,000 2,623,000 3,000,000 3,159,000 3,279,000 2,560,000 2,713,000 2,860,000 2,277,000 2,358,000 2,424,000 2,494,000 2,657,000 
      debit card fees
    1,498,000 1,603,000 1,664,000 1,581,000 1,902,000 1,702,000 1,706,000 1,543,000 2,067,000 1,717,000 1,759,000 1,642,000 1,704,000 1,594,000 1,709,000 2,872,000 1,727,000 1,740,000 1,791,000 1,601,000 1,643,000 1,611,000 1,459,000 1,468,000 1,568,000 1,641,000 1,641,000 
      trust fees
    923,000 895,000 867,000 899,000 867,000 846,000 811,000 794,000 764,000 783,000 810,000 765,000 754,000 810,000 809,000 843,000 844,000 839,000 827,000 801,000 765,000 756,000 714,000 777,000 764,000 733,000 749,000 
      atm processing fees
    484,000 483,000 482,000 463,000 506,000 533,000 540,000 591,000 622,000 640,000 702,000 654,000 646,000 594,000 469,000 451,000 488,000 573,000 618,000 601,000 570,000 606,000 518,000 579,000 696,000 725,000 722,000 
      other service fees
    426,000 448,000 450,000 429,000 428,000 454,000 450,000 438,000 445,000 463,000 458,000 399,000 416,000 463,000 480,000 449,000 449,000 475,000 491,000 469,000 457,000 454,000 420,000 506,000 513,000 580,000 585,000 
      bank owned life insurance gains
      106,000                         
      other noninterest income
    712,000 545,000 691,000 733,000 694,000 2,129,000 791,000 754,000 624,000 706,000 665,000 898,000 648,000 693,000 618,000 639,000 658,000 823,000 662,000 783,000 757,000 833,000 821,000 1,587,000 1,104,000 1,051,000 889,000 
      total noninterest income
    10,003,000 10,151,000 10,315,000 10,321,000 10,633,000 11,925,000 10,500,000 10,097,000 10,992,000 11,281,000 10,700,000 10,549,000 10,463,000 11,818,000 11,264,000 11,576,000 10,842,000 11,282,000 11,032,000 10,189,000 13,959,000 10,476,000 9,554,000 11,648,000 11,732,000 11,809,000 12,288,000 
      noninterest expense:
                               
      salaries and related benefits
    11,871,000 12,387,000 12,303,000 12,126,000 12,461,000 12,762,000 12,483,000 12,586,000 12,156,000 11,820,000 11,828,000 12,067,000 11,482,000 11,311,000 11,412,000 11,920,000 11,436,000 11,813,000 12,097,000 12,665,000 12,291,000 12,540,000 12,900,000 13,018,000 12,297,000 12,559,000 13,090,000 
      occupancy and equipment
    5,426,000 5,253,000 5,154,000 5,038,000 5,219,000 5,256,000 5,158,000 5,040,000 4,958,000 5,065,000 5,012,000 5,485,000 5,218,000 5,064,000 4,856,000 4,746,000 4,692,000 4,759,000 4,808,000 4,880,000 4,900,000 5,014,000 4,791,000 4,932,000 5,077,000 5,199,000 4,916,000 
      outsourced data processing services
    2,701,000 2,722,000 2,709,000 2,697,000 2,610,000 2,614,000 2,511,000 2,536,000 2,441,000 2,473,000 2,488,000 2,444,000 2,390,000 2,434,000 2,423,000 2,437,000 2,357,000 2,429,000 2,425,000 2,390,000 2,359,000 2,338,000 2,324,000 2,405,000 2,361,000 2,374,000 2,367,000 
      limited partnership operating losses
    891,000 915,000 915,000 915,000 1,095,000 1,210,000 1,440,000 1,440,000 1,440,000 1,440,000 1,440,000 1,434,000 1,431,000 1,431,000              
      courier service
    843,000 738,000 687,000 688,000 692,000 682,000 686,000 649,000 681,000 745,000 611,000 615,000 700,000 671,000 661,000 582,000 572,000 534,000 567,000 504,000 502,000 500,000 508,000 491,000 529,000 456,000 451,000 
      professional fees
    540,000 643,000 386,000 395,000 369,000 337,000 362,000 402,000 389,000 401,000 485,000 476,000 574,000 582,000 736,000 736,000 757,000 724,000 830,000 942,000 722,000 669,000 643,000 389,000 674,000 645,000 481,000 
      other noninterest expense
    3,194,000 3,142,000 3,375,000 3,268,000 3,407,000 3,448,000 3,490,000 3,446,000 3,452,000 3,706,000 3,975,000 3,689,000 3,295,000 3,274,000 4,477,000 4,390,000 4,033,000 4,371,000 3,496,000 3,456,000 3,702,000 3,470,000 3,515,000 3,356,000 3,198,000 2,724,000 3,624,000 
      total noninterest expense
    25,466,000 25,800,000 25,529,000 25,127,000 25,853,000 26,309,000 26,130,000 26,099,000 25,517,000 25,650,000 25,839,000 26,210,000 25,090,000 24,767,000 24,629,000 24,875,000 23,912,000 24,697,000 24,291,000 24,906,000 24,545,000 24,603,000 24,754,000 24,664,000 24,209,000 24,033,000 25,561,000 
      income before income taxes
    37,843,000 37,940,000 39,064,000 41,839,000 43,716,000 47,765,000 48,135,000 49,443,000 54,848,000 56,946,000 54,743,000 55,042,000 54,096,000 47,366,000 34,149,000 29,980,000 29,467,000 29,903,000 30,533,000 27,124,000 31,894,000 26,772,000 25,904,000 22,233,000 26,950,000 27,016,000 25,866,000 
      provision for income taxes
    10,036,000 9,677,000 9,998,000 10,802,000 12,016,000 12,708,000 12,673,000 13,026,000 15,380,000 15,345,000 14,495,000 14,591,000 14,752,000 12,606,000 8,835,000 7,364,000 7,747,000 7,840,000 7,954,000 6,977,000 8,056,000 6,721,000 6,342,000 5,271,000 6,222,000 6,626,000 6,241,000 
      net income
    27,807,000 28,263,000 29,066,000 31,037,000 31,700,000 35,057,000 35,462,000 36,417,000 39,468,000 41,601,000 40,248,000 40,451,000 39,344,000 34,760,000 25,314,000 22,616,000 21,720,000 22,063,000 22,579,000 20,147,000 23,838,000 20,051,000 19,562,000 16,962,000 20,728,000 20,390,000 19,625,000 
      yoy
    -12.28% -19.38% -18.04% -14.77% -19.68% -15.73% -11.89% -9.97% 0.32% 19.68% 59.00% 78.86% 81.14% 57.55% 12.11% 12.25% -8.88% 10.03% 15.42% 18.78% 15.00% -1.66% -0.32%     
      qoq
    -1.61% -2.76% -6.35% -2.09% -9.58% -1.14% -2.62% -7.73% -5.13% 3.36% -0.50% 2.81% 13.19% 37.32% 11.93% 4.13% -1.55% -2.29% 12.07% -15.48% 18.89% 2.50% 15.33% -18.17% 1.66% 3.90%  
      average common shares outstanding
    -279,000 25,341,000 25,889,000 26,642,000 5,000 26,685,000 26,680,000 26,674,000 -15,000 26,648,000 26,648,000 26,859,000 6,000 26,906,000 26,889,000 26,870,000 4,000 26,866,000 26,865,000 26,821,000 -35,000 26,930,000 26,935,000 27,068,000 32,000 26,986,000 26,942,000 
      average diluted common shares outstanding
    6,488,250 25,341,000 25,889,000 26,642,000 6,670,250 26,686,000 26,681,000 26,675,000 6,680,250 26,650,000 26,648,000 26,866,000 6,725,250 26,916,000 26,901,000 26,885,000 6,717,000 26,875,000 26,887,000 26,842,000 6,749,500 26,946,000 26,951,000 27,139,000 6,744,000 27,027,000 26,987,000 
      per common share data:
                               
      basic earnings
    1,120 1,120 1,120 1,160 1,190 1,310 1,330 1,370 1,480 1,560 1,510 1,510 1,460 1,290 940 840 810 820 840 750 880 740 720 630 760 760 730 
      diluted earnings
    1,120 1,120 1,120 1,160 1,190 1,310 1,330 1,370 1,480 1,560 1,510 1,510 1,470 1,290 940 840 810 820 840 750 880 740 720 630 770 750 730 
      dividends paid
    460 460 460 440 440 440 440 440 440 440 420 420 420 420 420 420 420 410 410 410 410 410 410 410 410 410 410 
      net interest and loan fee income after
                               
      interest and fee income:
                               
      total interest and fee income
       59,491,000    68,746,000    69,624,000    43,759,000    42,316,000    39,991,000    
      net interest and fee income
       56,095,000    65,745,000    69,153,000    43,279,000    41,841,000    39,549,000    
      net interest and fee income after (reversal of) provision for credit losses
       56,645,000                        
      life insurance gains
       102,000  202,000   1,000 278,000   7,000 923,000             433,000 
      provision (reversal of provision) for credit losses
          63,765,000 300,000 -287,500 400,000                  
      net interest and loan fee income after provision (reversal of provision) for credit losses
        58,936,000 62,149,000   52,975,000 71,315,000                  
      securities losses
            -31,250  -125,000                 
      net interest and fee income after provision (reversal of provision) for credit losses
           65,445,000                    
      short-term borrowed funds
            44,000 38,000 25,000 13,000 12,000 17,000 22,000 28,000 25,000 19,000 18,000 16,000 19,000 16,000 10,000 8,000 7,000 8,000 9,000 
      financial services commissions
            66,000 78,000 103,000 89,000 103,000 79,000 118,000 117,000 96,000 95,000 95,000 70,000 66,000 58,000 123,000 125,000 122,000 75,000 93,000 
      reversal of provision for credit losses
               -1,550,000                
      net interest and loan fee income after reversal of provision for credit losses
              69,882,000                 
      net interest and fee income after reversal of provision for credit losses
               70,703,000                
      provision for credit losses
                           4,300,000    
      net interest and loan fee income after provision for credit losses
                68,723,000 60,315,000 47,514,000  42,537,000 43,318,000 43,792,000  42,480,000 40,899,000 41,104,000     
      securities gains
                      34,000    71,000     
      amortization of identifiable intangibles
                  64,000 64,000 65,000 67,000 68,000 69,000 69,000 72,000 73,000 73,000 73,000 76,000 79,000 
      net interest and fee income after provision for credit losses
                   43,279,000    41,841,000    35,249,000    
      other borrowed funds
                          1,000     
      loss contingency
                              553,000 
      provision for loan losses
                               
      net interest and loan fee income after provision for loan losses
                            29,341,750 39,240,000 39,139,000 
      equity securitiesgains
                            12,500   
      equity securities gains
                              26,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2007-12-31 2006-12-31 2005-12-31 2004-12-31 2003-12-31 2002-12-31 
                                                                                  
        assets:
                                                                                  
        cash and due from banks
      397,284,000 567,801,000 659,268,000 626,437,000 727,336,000 601,494,000 502,945,000 486,124,000 434,250,000 190,314,000 420,550,000 266,187,000 195,202,000 294,236,000 413,665,000 753,293,000 1,037,593,000 1,132,085,000 1,011,048,000 939,929,000 866,457,000 621,275,000 398,964,000 500,820,000 304,628,000 373,421,000 415,639,000 418,586,000 421,788,000 420,284,000 522,660,000 629,146,000 555,607,000 575,002 561,757,000 529,362,000 546,815,000 462,271,000 471,367,000 441,785,000 471,164,000 433,044,000 268,587,000 289,606,000 247,450,000 380,836,000 524,338,000 484,904,000 428,840,000 472,028,000 388,579,000 384,276,000 355,459,000 491,382,000 367,964,000 320,925,000 541,102,000 530,045,000 459,754,000 320,119,000 348,157,000 338,793,000 344,169,000 294,240,000             
        debt securities available for sale
      3,596,855,000 3,468,734,000 3,305,324,000 3,226,449,000 3,236,049,000 3,395,810,000 3,580,486,000 3,699,318,000 3,889,177,000 3,999,801,000 3,906,233,000 4,046,458,000 4,217,513,000 4,331,743,000 4,376,331,000 4,607,114,000 4,616,588,000 4,638,855,000 4,602,706,000 4,304,162,000 3,990,570,000 4,063,185,000 3,983,994,000 3,708,370,000 3,210,689,000 3,078,846,000 2,983,767,000 2,775,899,000 2,702,240,000 2,654,670,000 2,478,908,000 2,363,194,000 2,351,970,000                                            
        debt securities held to maturity, net of allowance for credit losses of 1 at march 31, 2026 and december 31, 2025
      799,558,000                                                                            
        loans
      696,204,000 726,482,000 741,579,000 748,264,000 771,030,000 820,300,000 833,967,000 831,842,000 844,677,000 866,602,000 885,850,000 919,583,000 938,628,000 958,488,000 979,033,000 999,768,000 1,002,514,000 1,068,126,000 1,132,472,000 1,194,834,000 1,293,756,000 1,256,243,000 1,310,009,000 1,316,359,000 1,121,243,000 1,126,664,000 1,133,229,000 1,161,712,000 1,204,844,000 1,207,202,000 1,196,955,000 1,200,192,000 1,228,584,000 1,287,982 1,284,782,000 1,318,341,000 1,351,090,000 1,352,711,000 1,364,329,000 1,429,560,000 1,473,196,000 1,533,396,000 1,571,843,000 1,631,271,000 1,683,884,000 1,700,290,000 1,732,382,000 1,784,608,000 1,816,319,000                            
        allowance for credit losses on loans
      -11,151,000 -11,573,000 -11,859,000 -13,787,000 -13,914,000 -14,780,000 -15,318,000 -15,952,000 -15,879,000 -16,867,000 -17,744,000 -18,480,000 -19,509,000 -20,284,000 -21,218,000 -22,313,000 -22,925,000 -23,514,000 -23,882,000 -23,737,000 -23,483,000 -23,854,000 -24,142,000 -24,529,000                                                     
        loans, net of allowance for credit losses on loans
      685,053,000 714,909,000 729,720,000 734,477,000 757,116,000 805,520,000 818,649,000 815,890,000 828,798,000 849,735,000 868,106,000 901,103,000 919,119,000 938,204,000 957,815,000 977,455,000 979,589,000 1,044,612,000 1,108,590,000 1,171,097,000 1,270,273,000 1,232,389,000 1,285,867,000 1,291,830,000                                                     
        premises and equipment
      25,968,000 25,722,000 25,874,000 25,850,000 25,722,000 26,133,000 26,129,000 26,275,000 26,458,000 27,016,000 27,490,000 27,908,000 28,331,000 28,819,000 29,756,000 30,309,000 30,626,000 31,155,000 31,603,000 32,080,000 32,216,000 32,813,000 33,437,000 34,061,000 35,403,000 34,597,000 34,080,000 34,014,000 33,934,000 34,507,000 35,391,000 35,774,000 35,790,000 35,301 35,507,000 35,564,000 36,025,000 36,566,000 37,059,000 37,759,000 38,045,000 38,693,000 39,244,000 37,945,000 38,313,000 37,852,000 37,335,000 37,424,000 36,675,000 37,314,000 37,972,000 38,267,000 38,519,000 38,639,000 38,386,000 37,867,000 37,827,000 36,548,000 36,098,000 35,015,000 35,704,000 36,278,000 36,271,000 36,816,000 37,423,000 38,098,000 38,982,000 26,490,000 26,729,000 27,351,000 28,380,000 30,188,000 33,221,000 35,223,000 35,748,000  
        goodwill
      121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,673,000 121,699,000 121,699,000 121,699,000 121,699,000 121,699,000 121,699,000 121,719,000 121,719,000 121,907,000    
        other assets
      238,059,000 241,767,000 246,074,000 255,725,000 259,308,000 280,885,000 260,822,000 301,763,000 295,313,000 297,310,000 333,976,000 318,592,000 308,791,000 319,146,000 340,874,000 289,500,000 239,057,000 185,415,000 170,947,000 163,458,000 160,998,000 159,903,000 160,269,000 167,566,000 176,112,000 164,332,000 152,772,000 160,312,000 165,336,000 162,906,000 165,474,000 168,933,000 159,786,000 158,450 164,969,000 168,026,000 165,277,000 171,724,000 154,461,000 160,008,000 163,204,000 165,854,000 158,912,000 165,513,000 160,574,000 166,458,000 160,752,000 162,570,000 169,389,000 176,432,000 176,676,000 181,460,000 185,653,000 188,086,000 204,091,000 213,525,000 227,659,000 226,866,000 229,552,000 234,628,000                284,763,000 
        total assets
      5,864,450,000 5,960,180,000 5,914,438,000 5,825,069,000 5,966,624,000 6,076,274,000 6,161,143,000 6,312,145,000 6,464,685,000 6,364,592,000 6,567,288,000 6,582,740,000 6,700,471,000 6,950,317,000 7,177,025,000 7,222,405,000 7,306,417,000 7,461,026,000 7,403,573,000 7,147,779,000 6,912,481,000 6,747,931,000 6,563,215,000 6,463,889,000 5,628,126,000 5,619,555,000 5,616,055,000 5,523,448,000 5,555,961,000 5,568,526,000 5,529,463,000 5,577,844,000 5,551,036,000 5,513,046 5,445,808,000 5,393,350,000 5,395,947,000 5,366,083,000 5,306,778,000 5,179,085,000 5,199,868,000 5,168,875,000 5,001,395,000 5,031,230,000 5,035,777,000 5,035,724,000 4,993,725,000 4,931,095,000 4,921,042,000 4,847,055,000 4,806,487,000 4,813,908,000 4,887,844,000 4,952,193,000 4,859,627,000 4,953,130,000 5,060,257,000 5,042,161,000 4,966,499,000 4,876,731,000 4,937,429,000 4,931,524,000 4,977,871,000 4,727,086,000 4,745,495,000 4,975,501,000 4,971,159,000 5,193,595,000 5,428,865,000 4,032,934,000 4,558,959,000 4,769,335,000 5,149,209,000    
        liabilities:
                                                                                  
        noninterest-bearing deposits
      2,135,925,000 2,252,490,000 2,214,100,000 2,175,841,000 2,241,802,000 2,333,389,000 2,375,958,000 2,459,467,000 2,514,161,000 2,605,844,000 2,723,403,000 2,721,046,000 2,788,992,000 2,947,277,000 3,069,907,000 2,987,725,000 3,000,268,000 3,069,080,000 2,988,329,000 2,872,920,000 2,798,542,000 2,725,177,000 2,684,028,000 2,702,885,000 2,183,283,000 2,240,112,000 2,265,640,000 2,163,841,000 2,179,803,000 2,243,251,000 2,211,028,000 2,205,971,000 2,179,157,000 2,197,526 2,128,342,000 2,079,608,000 2,046,390,000 2,089,443,000                                       
        interest-bearing deposits
      2,647,827,000 2,587,529,000 2,579,079,000 2,571,694,000 2,632,293,000 2,678,461,000 2,689,092,000 2,671,973,000 2,840,764,000 2,868,423,000 2,975,610,000 2,984,881,000 3,110,323,000 3,278,013,000 3,425,349,000 3,427,866,000 3,405,606,000 3,344,876,000 3,300,632,000 3,203,469,000 3,125,291,000 2,962,802,000 2,855,162,000 2,765,527,000 2,616,143,000 2,572,509,000 2,530,983,000 2,566,421,000 2,612,781,000 2,623,588,000 2,624,809,000 2,681,151,000 2,688,710,000 2,630,087 2,606,238,000 2,602,962,000 2,651,583,000 2,615,298,000                                       
        total deposits
      4,783,752,000 4,840,019,000 4,793,179,000 4,747,535,000 4,874,095,000 5,011,850,000 5,065,050,000 5,131,440,000 5,354,925,000 5,474,267,000 5,699,013,000 5,705,927,000 5,899,315,000 6,225,290,000 6,495,256,000 6,415,591,000 6,405,874,000 6,413,956,000 6,288,961,000 6,076,389,000 5,923,833,000 5,687,979,000 5,539,190,000 5,468,412,000 4,799,426,000 4,812,621,000 4,796,623,000 4,730,262,000 4,792,584,000 4,866,839,000 4,835,837,000 4,887,122,000 4,867,867,000 4,827,613 4,734,580,000 4,682,570,000 4,697,973,000 4,704,741,000 4,644,870,000 4,485,314,000 4,516,750,000 4,540,659,000 4,366,920,000 4,354,844,000 4,380,076,000 4,349,191,000 4,321,638,000 4,213,389,000 4,214,783,000 4,163,781,000 4,108,307,000 4,101,394,000 4,161,950,000 4,232,492,000 4,130,557,000 4,208,499,000 4,249,004,000 4,249,921,000 4,192,383,000 4,088,385,000 4,140,373,000 4,132,961,000 4,072,698,000 3,890,560,000 3,895,029,000 4,060,208,000 4,024,626,000 4,157,137,000 4,256,281,000 3,095,054,000 3,264,790,000 3,516,734,000 3,846,101,000    
        securities sold under repurchase agreements
      144,456,000  133,651,000 101,210,000 113,219,000  132,487,000 100,167,000 50,334,000                                                                    
        other liabilities
      53,552,000 49,354,000 55,962,000 54,541,000 56,172,000 54,145,000 54,566,000 64,938,000 67,735,000 59,269,000 104,511,000 86,946,000 75,143,000 65,125,000 65,895,000 71,521,000 74,357,000 73,722,000 157,557,000 139,151,000 79,356,000 112,598,000 90,476,000 101,231,000 70,490,000 44,589,000 60,408,000 45,168,000 48,293,000 34,849,000 39,279,000 35,690,000 35,730,000 36,723 40,934,000 39,417,000 39,475,000 40,897,000 42,554,000 67,592,000 91,694,000 42,983,000 43,474,000 68,301,000 45,361,000 50,131,000 41,593,000 79,645,000 70,557,000 47,095,000 57,888,000 50,565,000 54,317,000 55,113,000 63,744,000 54,212,000 94,075,000 66,887,000 58,133,000 60,075,000                34,512,000 
        total liabilities
      4,981,760,000 5,026,671,000 4,982,792,000 4,903,286,000 5,043,486,000 5,186,317,000 5,252,103,000 5,496,545,000 5,672,994,000 5,591,698,000 5,918,865,000 5,930,878,000 6,057,546,000 6,348,207,000 6,638,037,000 6,605,279,000 6,604,673,000 6,633,924,000 6,565,620,000 6,305,583,000 6,100,349,000 5,903,122,000 5,737,639,000 5,655,813,000 4,922,580,000 4,888,138,000 4,902,677,000 4,830,011,000 4,899,194,000 4,952,935,000 4,936,872,000 4,991,706,000 4,968,953,000 4,922,807 4,841,851,000 4,797,756,000 4,811,059,000 4,804,716,000 4,743,782,000 4,620,758,000 4,660,895,000 4,636,670,000 4,467,457,000 4,505,892,000 4,508,397,000 4,509,121,000 4,460,330,000 4,392,292,000 4,380,159,000 4,304,121,000 4,264,647,000 4,269,286,000 4,328,864,000 4,392,091,000 4,300,786,000 4,395,204,000 4,500,729,000 4,483,520,000 4,412,511,000 4,327,391,000 4,386,514,000 4,386,237,000 4,436,698,000 4,199,405,000 4,226,364,000 4,470,053,000 4,435,441,000 4,634,364,000 4,892,197,000 3,623,082,000 4,164,356,000 4,345,100,000 4,722,495,000    
        contingencies
                                                                                  
        shareholders' equity:
                                                                                  
        common shares, ...
       439,980,000   470,809,000 476,471,000                                                                       
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 23,631 at march 31, 2026 and 24,623 at december 31, 2025
      422,313,000                                                                            
        deferred compensation
      35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 35,000 771,000 771,000 771,000 771,000 771,000 1,395,000 1,395,000 1,533,000 1,533,000 1,533 1,533,000 1,533,000 1,533,000 1,533,000 1,533,000 1,533,000 1,533,000 2,578,000 2,578,000 2,711,000 2,711,000 2,711,000 2,711,000 2,711,000 2,711,000 2,711,000 2,711,000 2,711,000 3,101,000 3,101,000 3,101,000 3,101,000 2,840,000 3,060,000 3,060,000 3,060,000 2,724,000 2,724,000 2,724,000 2,724,000 2,485,000 2,485,000 2,485,000 2,485,000 2,409,000 2,409,000 2,990,000 2,734,000 2,423,000 2,146,000   
        accumulated other comprehensive loss
      -107,267,000 -91,139,000 -99,913,000 -116,747,000 -136,768,000 -168,104,000 -127,653,000 -197,300,000 -196,857,000 -190,282,000 -285,709,000 -252,043,000 -231,573,000                -11,249,000 -39,996,000 -54,066,000 -49,900,000 -43,452,000 -16,832 -3,433,000 -5,864,000 -9,443,000                                        
        retained earnings
      567,609,000 584,633,000 582,959,000 581,566,000 589,062,000 581,555,000 561,597,000 538,282,000 514,559,000 490,005,000 462,270,000 432,395,000 403,339,000 383,094,000 355,053,000 331,596,000 317,574,000 306,395,000 295,958,000 284,910,000 273,346,000 264,356,000 254,717,000 246,958,000 238,903,000 239,135,000 229,500,000 220,173,000 211,941,000 205,841,000 197,477,000 191,167,000 184,185,000 173,804 180,202,000 175,446,000 170,128,000 165,302,000 160,861,000 155,229,000 150,928,000 150,094,000 145,513,000 141,300,000 140,111,000 140,468,000 140,756,000 141,356,000 145,826,000 156,964,000 163,921,000 165,889,000 166,928,000 170,364,000 170,075,000 169,164,000 168,758,000 166,437,000 165,735,000 162,752,000 166,523,000 163,519,000 155,088,000 145,654,000 142,353,000 133,002,000 120,298,000 107,033,000 95,518,000 54,138,000 61,922,000 78,122,000 108,450,000 118,996,000 106,895,000  
        total shareholders' equity
      882,690,000 933,509,000 931,646,000 921,783,000 923,138,000 889,957,000 909,040,000 815,600,000 791,691,000 772,894,000 648,423,000 651,862,000 642,925,000 602,110,000 538,988,000 617,126,000 701,744,000 827,102,000 837,953,000 842,196,000 812,132,000 844,809,000 825,576,000 808,076,000 705,546,000 731,417,000 713,378,000 693,437,000 656,767,000 615,591,000 592,591,000 586,138,000 582,083,000 590,239 603,957,000 595,594,000 584,888,000 561,367,000 562,996,000 558,327,000 538,973,000 532,205,000 533,938,000 525,338,000 527,380,000  533,395,000 538,803,000 540,883,000  541,840,000 544,622,000 558,980,000  558,841,000 557,926,000 559,528,000  553,988,000 549,340,000                 
        total liabilities and shareholders' equity
      5,864,450,000 5,960,180,000 5,914,438,000 5,825,069,000 5,966,624,000 6,076,274,000 6,161,143,000 6,312,145,000 6,464,685,000 6,364,592,000 6,567,288,000 6,582,740,000 6,700,471,000 6,950,317,000 7,177,025,000 7,222,405,000 7,306,417,000 7,461,026,000 7,403,573,000 7,147,779,000 6,912,481,000 6,747,931,000 6,563,215,000 6,463,889,000 5,628,126,000 5,619,555,000 5,616,055,000 5,523,448,000  5,568,526,000 5,529,463,000 5,577,844,000 5,551,036,000 5,513,046 5,445,808,000 5,393,350,000 5,395,947,000 5,366,083,000 5,306,778,000 5,179,085,000 5,199,868,000 5,168,875,000 5,001,395,000 5,031,230,000 5,035,777,000  4,993,725,000 4,931,095,000 4,921,042,000  4,806,487,000 4,813,908,000 4,887,844,000  4,859,627,000 4,953,130,000 5,060,257,000  4,966,499,000 4,876,731,000                 
        debt securities held to maturity, net of allowance for credit losses of 1 at december 31, 2025 and 1 at december 31, 2024
       819,574,000                                                                           
        identifiable intangibles
         19,000 72,000 125,000 178,000 234,000 291,000 347,000 404,000 463,000 523,000 583,000 644,000 707,000 771,000 835,000 900,000 967,000 1,035,000 1,104,000 1,173,000 1,245,000 1,318,000 1,391,000 1,464,000 1,540,000 1,619,000 1,929,000 2,376,000 2,827,000 3,280,000 3,850 4,605,000 5,365,000 6,127,000 6,927,000 7,789,000 8,656,000 9,526,000 10,431,000 11,379,000 12,331,000 13,286,000 14,287,000 15,338,000 16,394,000 17,452,000 18,557,000 19,714,000 20,877,000 22,042,000 23,261,000 24,553,000 25,888,000 27,227,000 28,629,000 30,099,000 31,576,000 33,056,000 34,604,000 36,226,000 32,529,000 34,070,000 35,667,000 38,264,000 39,934,000 41,630,000 15,208,000 18,429,000 22,082,000 26,170,000    
        short-term borrowed funds
       137,298,000    120,322,000    58,162,000 115,341,000 138,005,000 83,088,000 57,792,000 76,886,000 118,167,000 124,442,000 146,246,000 119,102,000 90,043,000 95,479,000 102,545,000 107,973,000 86,170,000 52,664,000 30,928,000 45,646,000 54,581,000 58,317,000 51,247,000 61,756,000 68,894,000 65,356,000 58,471 66,337,000 75,769,000 73,611,000 59,078,000 56,358,000 67,852,000 52,451,000 53,028,000 57,063,000 82,747,000 82,960,000 89,784,000 76,943,000 68,962,000 64,382,000 62,668,000 47,821,000 66,640,000 61,854,000 53,687,000 55,630,000 81,582,000 106,683,000 115,689,000 120,917,000 106,727,000 104,359,000 107,385,000 193,202,000 210,503,000 211,756,000 227,178,000 222,030,000 316,466,000 441,418,000 457,275,000 798,599,000 731,977,000 775,173,000 735,423,000 590,646,000 249,439,000 
        debt securities held to maturity, net of allowance for credit losses of
                                                                                  
        1 at september 30, 2025 and december 31, 2024
                                                                                  
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 25,107 at september 30, 2025 and 26,708 at december 31, 2024
        448,565,000                                                                          
        debt securities held to maturity, net of allowance for credit losses of 1 at june 30, 2025 and december 31, 2024
         834,439,000                                                                         
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 25,587 at june 30, 2025 and 26,708 at december 31, 2024
         456,929,000                                                                         
        debt securities held to maturity, net of allowance for credit losses of 1 at march 31, 2025 and december 31, 2024
          839,348,000                                                                        
        debt securities held to maturity, net of allowance for credit losses of 1 at december 31, 2024 and 1 at december 31, 2023
           844,634,000                                                                       
        debt securities held to maturity, net of allowance for credit losses of 1 at september 30, 2024 and december 31, 2023
            850,261,000                                                                      
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,686 at september 30, 2024 and 26,671 at december 31, 2023
            475,061,000                                                                      
        debt securities held to maturity, net of allowance for credit losses of 1 at june 30, 2024 and december 31, 2023
             860,868,000                                                                     
        bank term funding program borrowings
             200,000,000 200,000,000                                                                    
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,683 at june 30, 2024 and 26,671 at december 31, 2023
             474,583,000                                                                     
        debt securities held to maturity, net of allowance for credit losses of 1 at march 31, 2024 and december 31, 2023
              868,725,000                                                                    
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,678 at march 31, 2024 and 26,671 at december 31, 2023
              473,954,000                                                                    
        debt securities held to maturity, net of allowance for credit losses of 1 at december 31, 2023 and 1 at december 31, 2022
               878,396,000                                                                   
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,671 at december 31, 2023 and 26,913 at december 31, 2022
               473,136,000                                                                   
        debt securities held to maturity, net of allowance for credit losses of 1 at september 30, 2023 and december 31, 2022
                888,856,000                                                                  
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,649 at september 30, 2023 and 26,913 at december 31, 2022
                471,827,000                                                                  
        debt securities held to maturity, net of allowance for credit losses of 1 at june 30, 2023 and december 31, 2022
                 900,356,000                                                                 
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,648 at june 30, 2023 and 26,913 at december 31, 2022
                 471,475,000                                                                 
        debt securities held to maturity, net of allowance for credit losses of 1 at march 31, 2023 and december 31, 2022
                  909,319,000                                                                
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,648 at march 31, 2023 and 26,913 at december 31, 2022
                  471,124,000                                                                
        debt securities held to maturity, net of allowance for credit losses of 1 at december 31, 2022 and 7 at december 31, 2021
                   915,913,000                                                               
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,913 at december 31, 2022 and 26,866 at december 31, 2021
                   475,086,000                                                               
        accumulated other comprehensive income
                   -256,105,000 -290,797,000 -188,025,000 -88,300,000 49,664,000 71,284,000 86,921,000 68,901,000 114,412,000 103,623,000 93,732,000 171,000 26,051,000 20,454,000 13,124,000          -10,074,000 9,001,000 11,885,000 6,619,000 675,000 7,198,000 3,988,000 9,600,000 5,292,000 9,733,000 12,554,000 8,856,000 4,313,000 4,120,000 4,524,000 15,372,000 14,625,000 14,454,000 13,030,000 12,180,000 11,369,000 10,795,000 8,251,000 2,526,000 159,000 7,238,000 6,314,000 4,796,000 3,714,000 6,053,000 1,747,000 2,274,000 1,040,000 -4,520,000 1,850,000     
        debt securities held to maturity, net of allowance for credit losses of 7 at september 30, 2022 and december 31, 2021
                    936,267,000                                                              
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,911 at september 30, 2022 and 26,866 at december 31, 2021
                    474,697,000                                                              
        debt securities held to maturity, net of allowance for credit losses of 7 at june 30, 2022 and december 31, 2021
                     442,354,000                                                             
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,896 at june 30, 2022 and 26,866 at december 31, 2021
                     473,520,000                                                             
        debt securities held to maturity, net of allowance for credit losses of 7 at march 31, 2022 and december 31, 2021
                      280,520,000                                                            
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,883 at march 31, 2022 and 26,866 at december 31, 2021
                      472,435,000                                                            
        debt securities held to maturity, net of allowance for credit losses of 7 at december 31, 2021 and 9 at december 31, 2020
                       306,396,000                                                           
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,866 at december 31, 2021 and 26,807 at december 31, 2020
                       471,008,000                                                           
        debt securities held to maturity, net of allowance for credit losses of 7 at september 30, 2021 and 9 at december 31, 2020
                        356,106,000                                                          
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,866 at september 30, 2021 and 26,807 at december 31, 2020
                        470,676,000                                                          
        debt securities held to maturity, net of allowance for credit losses of 9 at june 30, 2021 and 9 at december 31, 2020
                         414,413,000                                                         
        common stock (no par value), authorized: 150,000 shares issued and outstanding: 26,865 at june 30, 2021 and 26,807 at december 31, 2020
                         470,330,000                                                         
        debt securities held to maturity, net of allowance for credit losses of 9 at march 31, 2021 and 9 at december 31, 2020
                          469,259,000                                                        
        other borrowed funds
                          1,681,000                                                        
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,864 at march 31, 2021 and 26,807 at december 31, 2020
                          469,850,000                                                        
        debt securities held to maturity, net of allowance for credit losses of 9 at december 31, 2020 and - at december 31, 2019
                           515,589,000                                                       
        other real estate owned
                            43,000 43,000 43,000 43,000 43,000 43,000 43,000 350,000 620,000 939,000 1,376,000 1,426 1,426,000 1,645,000 2,136,000 3,095,000 3,032,000 4,162,000 8,438,000 9,264,000 9,269,000 9,260,000 9,233,000 6,374,000 7,273,000 8,543,000 12,186,000                14,266,000    4,756,000 3,505,000 613,000 647,000   90,000  
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,807 at december 31, 2020 and 27,062 at december 31, 2019
                           466,006,000                                                       
        debt securities held to maturity, net of allowance for credit losses of 16 at september 30, 2020 and - at december 31, 2019
                            577,795,000                                                      
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,898 at september 30, 2020 and 27,062 at december 31, 2019
                            467,201,000                                                      
        debt securities held to maturity, net of allowance for credit losses of 16 at june 30, 2020 and - at december 31, 2019
                             638,281,000                                                     
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,933 at june 30, 2020 and 27,062 at december 31, 2019
                             467,351,000                                                     
        debt securities held to maturity
                              681,821,000                                                    
        allowance for credit losses
                              -24,804,000                                                    
        loans, net of allowance for credit losses
                              1,096,439,000                                                    
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,932 at march 31, 2020 and 27,062 at december 31, 2019
                              465,701,000                                                    
        equity securities
                                 1,797,000 1,771,000 1,747,000 1,734,000 1,750,000 1,764,000                                            
        debt securities held to maturity, with fair values of: 744,296 at december 31, 2019 and 971,445 at december 31, 2018
                               738,072,000                                                   
        allowance for loan losses
                               -19,484,000 -19,828,000  -20,477,000 -21,351,000 -22,027,000 -23,040,000 -23,081,000 -23,009 -23,628,000 -24,103,000 -24,919,000 -25,954,000 -26,359,000 -28,910,000 -29,487,000 -29,771,000 -30,036,000 -30,828,000 -31,187,000 -31,485,000 -31,769,000 -32,398,000 -32,109,000 -31,693,000 -31,916,000 -30,926,000 -30,354,000 -30,234,000 -30,966,000 -31,523,000 -31,883,000 -32,597,000 -32,893,000 -33,008,000 -34,321,000 -35,636,000 -38,129,000 -39,716,000 -40,316,000 -41,043,000 -42,683,000 -43,122,000 -43,803,000        
        loans, net of allowance for loan losses
                               1,107,180,000 1,113,401,000 1,141,595,000 1,184,367,000 1,185,851,000 1,174,928,000 1,177,152,000 1,205,503,000 1,264,973 1,261,154,000 1,294,238,000 1,326,171,000 1,326,757,000 1,337,970,000 1,400,650,000 1,443,709,000 1,503,625,000 1,541,807,000 1,600,443,000 1,652,697,000 1,668,805,000 1,700,613,000 1,752,210,000 1,784,210,000                            
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 27,062 at december 31, 2019 and 26,730 at december 31, 2018
                               465,460,000                                                   
        debt securities held to maturity, with fair values of: 799,241 at september 30, 2019 and 971,445 at december 31, 2018
                                793,216,000                                                  
        common stock (no par value), authorized - 150,000 shares
                                                                                  
        issued and outstanding: 27,014 at september 30, 2019 and 26,730 at december 31, 2018
                                462,653,000                                                  
        debt securities held to maturity, with fair values of:
                                                                                  
        872,976 at june 30, 2019 and 971,445 at december 31, 2018
                                 867,989,000                                                 
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,962 at june 30, 2019 and 26,730 at december 31, 2018
                                 459,369,000                                                 
        920,603 at march 31, 2019 and 971,445 at december 31, 2018
                                  923,190,000                                                
        issued and outstanding: 26,901 at march 31, 2019 and 26,730 at december 31, 2018
                                  455,304,000                                                
        total liabilities andshareholders' equity
                                  5,555,961,000                                                
        debt securities held to maturity, with fair values of: 971,445 at december 31, 2018 and 1,155,342 at december 31, 2017
                                   984,609,000                                               
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,730 at december 31, 2018 and 26,425 at december 31, 2017
                                   448,351,000                                               
        debt securities held to maturity, with fair values of: 1,002,648 at september 30, 2018 and 1,155,342 at december 31, 2017
                                    1,025,699,000                                              
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,727 at september 30, 2018 and 26,425 at december 31, 2017
                                    447,785,000                                              
        debt securities held to maturity, with fair values of: 1,058,573 at june 30, 2018 and 1,155,342 at december 31, 2017
                                     1,076,456,000                                             
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,649 at june 30, 2018 and 26,425 at december 31, 2017
                                     443,338,000                                             
        debt securities held to maturity, with fair values of: 1,098,895 at march 31, 2018 and 1,155,342 at december 31, 2017
                                      1,114,287,000                                            
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,591 at march 31, 2018 and 26,425 at december 31, 2017
                                      439,817,000                                            
        investment securities available for sale
                                       2,193,507 2,090,477,000 1,976,156,000 1,893,309,000 1,890,758,000 1,762,408,000 1,531,035,000 1,585,970,000 1,570,216,000 1,571,710,000 1,634,878,000 1,777,320,000 1,600,781,000 1,391,362,000 1,278,242,000 1,240,288,000 1,079,381,000 1,060,428,000 1,004,888,000 972,176,000 825,636,000 738,462,000 708,717,000 639,738,000 638,753,000 683,640,000 705,078,000 741,603,000 671,484,000 569,511,000 466,500,000 414,987,000 384,208,000 391,644,000 407,127,000 436,343,000 288,454,000 532,821,000 615,525,000 662,388,000 931,710,000 1,413,911,000  
        investment securities held to maturity, with fair values of: 1,155,342 at december 31, 2017 and 1,340,741 at december 31, 2016
                                       1,158,864                                           
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,425 at december 31, 2017 and 25,907 at december 31, 2016
                                       431,734                                           
        investment securities held to maturity, with fair values of: 1,208,279 at september 30, 2017 and 1,340,741 at december 31, 2016
                                        1,204,240,000                                          
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,319 at september 30, 2017 and 25,907 at december 31, 2016
                                        425,655,000                                          
        investment securities held to maturity, with fair values of: 1,264,759 at june 30, 2017 and 1,340,741 at december 31, 2016
                                         1,261,321,000                                         
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,304 at june 30, 2017 and 25,907 at december 31, 2016
                                         424,479,000                                         
        investment securities held to maturity, with fair values of: 1,296,738 at march 31, 2017 and 1,340,741 at december 31, 2016
                                          1,298,414,000                                        
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,283 at march 31, 2017 and 25,907 at december 31, 2016
                                          422,670,000                                        
        investment securities held to maturity, with fair values of: 1,340,741 at december 31, 2016 and 1,325,699 at december 31, 2015
                                           1,346,312,000                                       
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 25,907 at december 31, 2016 and 25,528 at december 31, 2015
                                           404,606,000                                       
        investment securities held to maturity, with fair values of: 1,440,119 at september 30, 2016 and 1,325,699 at december 31, 2015
                                            1,411,019,000                                      
        noninterest bearing deposits
                                            2,064,988,000 1,978,947,000 1,989,010,000 2,026,049,000 1,942,450,000 1,930,551,000 1,902,904,000 1,910,781,000 1,893,480,000 1,814,023,000 1,778,034,000 1,740,182,000 1,689,986,000 1,644,151,000 1,621,887,000 1,676,071,000 1,594,379,000 1,573,188,000 1,575,687,000 1,562,254,000 1,527,030,000 1,446,973,000 1,476,590,000 1,454,663,000 1,428,882,000 1,427,611,000             
        interest bearing deposits
                                            2,579,882,000 2,506,367,000 2,527,740,000 2,514,610,000 2,424,470,000 2,424,293,000 2,477,172,000 2,438,410,000 2,428,158,000 2,399,366,000 2,436,749,000 2,423,599,000 2,418,321,000 2,457,243,000 2,540,063,000 2,556,421,000    2,687,667,000 2,665,353,000 2,641,412,000 2,663,783,000 2,678,298,000 2,643,816,000 2,462,949,000             
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 25,665 at september 30, 2016 and 25,528 at december 31, 2015
                                            391,601,000                                      
        investment securities held to maturity, with fair values of: 1,507,177 at june 30, 2016 and 1,325,699 at december 31, 2015
                                             1,473,357,000                                     
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 25,632 at june 30, 2016 and 25,528 at december 31, 2015
                                             389,680,000                                     
        investment securities held to maturity, with fair values of: 1,381,808 at march 31, 2016 and 1,325,699 at december 31, 2015
                                              1,358,139,000                                    
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 25,438 at march 31, 2016 and 25,528 at december 31, 2015
                                              379,893,000                                    
        investment securities held to maturity, with fair values of: 1,325,699 at december 31, 2015 and 1,048,562 at december 31, 2014
                                               1,316,075,000                                   
        federal home loan bank advances
                                                   20,015,000 20,156,000 20,296,000 20,437,000 20,577,000 25,631,000 25,687,000 25,743,000 25,799,000 25,855,000 25,911,000 25,967,000 26,023,000 26,078,000 46,351,000 51,490,000 61,698,000 66,934,000 10,223,000 10,306,000 85,470,000 85,904,000 86,338,000 86,772,000      105,000,000 138,615,000 
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 25,528 at december 31, 2015 and 25,745 at december 31, 2014
                                               378,858,000                                   
        investment securities held to maturity, with fair values of: 1,293,958 at september 30, 2015 and 1,048,562 at december 31, 2014
                                                1,278,814,000                                  
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 25,530 at september 30, 2015 and 25,745 at december 31, 2014
                                                378,649,000                                  
        investment securities held to maturity, with fair values of: 1,164,603 at june 30, 2015 and 1,048,562 at december 31, 2014
                                                 1,159,581,000                                 
        deposits:
                                                                                  
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 25,529 at june 30, 2015 and 25,745 at december 31, 2014
                                                 377,339,000                                 
        investment securities held to maturity, with fair values of: 1,030,865 at march 31, 2015 and 1,048,562 at december 31, 2014
                                                  1,015,231,000                                
        common stock (no par value), authorized - 150,000 shares issued and outstanding - 25,563 at march 31, 2015 and 25,745 at december 31, 2014
                                                  374,958,000                                
        assets
                                                                                  
        investment securities held to maturity, with fair values of 1,048,562 at december 31, 2014 and 1,112,676 at december 31, 2013
                                                   1,038,658,000                               
        liabilities
                                                                                  
        term repurchase agreement
                                                     10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000                   
        shareholders’ equity
                                                                                 303,573,000 
        common stock (no par value), authorized - 150,000 shares issued and outstanding – 25,745 at december 31, 2014 and 26,510 at december 31, 2013
                                                   378,132,000                               
        total shareholders’ equity
                                                   526,603,000    542,934,000    560,102,000    558,641,000   550,915,000 545,287,000 541,173,000 527,681,000 519,131,000 505,448,000 535,718,000 559,231,000 536,668,000 409,852,000 394,603,000 424,235,000 426,714,000    
        total liabilities and shareholders’ equity
                                                   5,035,724,000    4,847,055,000    4,952,193,000    5,042,161,000   4,937,429,000 4,931,524,000 4,977,871,000 4,727,086,000 4,745,495,000 4,975,501,000 4,971,159,000 5,193,595,000 5,428,865,000 4,032,934,000 4,558,959,000 4,769,335,000 5,149,209,000    
        investment securities held to maturity, with fair values of: 1,041,385 at september 30, 2014 and 1,112,676 at december 31, 2013
                                                    1,035,041,000                              
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 25,906 at september 30, 2014 and 26,510 at december 31, 2013
                                                    380,195,000                              
        investment securities held to maturity, with fair values of: 1,073,793 at june 30, 2014 and 1,112,676 at december 31, 2013
                                                     1,069,135,000                             
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,074 at june 30, 2014 and 26,510 at december 31, 2013
                                                     382,182,000                             
        investment securities held to maturity, with fair values of: 1,103,827 at march 31, 2014 and 1,112,676 at december 31, 2013
                                                      1,110,329,000                            
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,299 at march 31, 2014 and 26,510 at december 31, 2013
                                                      383,490,000                            
        investment securities held to maturity, with fair values of 1,112,676 at december 31, 2013 and 1,184,557 at december 31, 2012
                                                       1,132,299,000                           
        purchased covered loans
                                                       250,670,000 296,380,000 324,976,000 353,034,000 372,283,000 418,364,000 463,251,000 491,103,000 535,278,000 575,353,000 622,727,000 660,456,000 692,972,000 718,618,000              
        purchased non-covered loans
                                                       53,790,000 57,838,000 61,062,000 70,504,000 74,891,000 82,676,000 102,390,000 112,179,000 125,921,000 139,200,000 164,844,000 187,203,000 199,571,000 212,318,000              
        originated loans
                                                       1,523,284,000 1,523,090,000 1,553,303,000 1,613,396,000 1,664,183,000 1,708,414,000 1,751,578,000 1,819,162,000 1,862,607,000 1,920,286,000 1,963,642,000 1,986,976,000 2,029,541,000 2,077,915,000              
        total loans
                                                       1,796,051,000 1,845,392,000 1,908,415,000 2,006,580,000 2,081,123,000 2,178,488,000 2,285,696,000 2,390,561,000 2,491,209,000 2,601,946,000 2,718,205,000 2,800,314,000 2,886,448,000 2,970,722,000 2,848,473,000 2,915,767,000 3,015,346,000 3,157,103,000 3,310,526,000 3,401,505,000        
        non-covered other real estate owned
                                                       5,527,000 5,697,000 8,957,000 9,671,000 12,661,000 14,842,000 17,585,000 20,167,000 26,500,000 24,671,000 16,637,000 14,613,000 13,620,000 22,201,000 18,028,000  12,642,000 4,319,000 4,715,000         
        covered other real estate owned
                                                       7,793,000 9,273,000 10,480,000 13,713,000 13,691,000 12,437,000 14,608,000 15,810,000 19,135,000 23,160,000 24,348,000 20,914,000 21,791,000 25,251,000 23,670,000 22,305,000 23,297,000 18,740,000 13,691,000 13,391,000        
        debt financing
                                                        15,000,000 15,000,000 15,000,000  15,000,000 15,000,000 15,000,000                    
        common stock (no par value), authorized - 150,000 shares issued and outstanding – 26,510 at december 31, 2013 and 27,213 at december 31, 2012
                                                       378,946,000                           
        investment securities held to maturity, with fair values of: 1,129,976 at september 30, 2013 and 1,184,557 at december 31, 2012
                                                        1,141,083,000                          
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,578 at september 30, 2013 and 27,213 at december 31, 2012
                                                        371,088,000                          
        investment securities held to maturity, with fair values of: 1,124,946 at june 30, 2013 and 1,184,557 at december 31, 2012
                                                         1,134,615,000                         
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 26,769 at june 30, 2013 and 27,213 at december 31, 2012
                                                         371,498,000                         
        investment securities held to maturity, with fair values of: 1,185,641 at march 31, 2013 and 1,184,557 at december 31, 2012
                                                          1,162,358,000                        
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 27,018 at march 31, 2013 and 27,213 at december 31, 2012
                                                          373,579,000                        
        investment securities held to maturity, with fair values of 1,184,557 at december 31, 2012 and 947,493 at december 31, 2011
                                                           1,156,041,000                       
        debt financing and notes payable
                                                           15,000,000    15,000,000 15,000,000 25,853,000 26,108,000 26,363,000 26,396,000 26,430,000 26,464,000 26,497,000 26,531,000 26,564,000 26,598,000 26,631,000 36,773,000 36,920,000 40,281,000   24,875,000 
        common stock (no par value), authorized - 150,000 shares issued and outstanding – 27,213 at december 31, 2012 and 28,150 at december 31, 2011
                                                           372,012,000                       
        investment securities held to maturity, with fair values of: 1,190,345 at september 30, 2012, 947,493 at december 31, 2011
                                                            1,158,731,000                      
        interest bearing deposits:
                                                                                  
        transaction
                                                            745,852,000 742,633,000 748,149,000        653,872,000 669,004,000 660,001,000 716,706,000 730,153,000 525,153,000 544,411,000 588,668,000 658,667,000    
        savings
                                                            1,133,788,000 1,136,876,000 1,143,027,000        957,126,000 971,384,000 962,823,000 968,408,000 968,411,000 745,496,000 760,006,000 865,268,000 1,022,645,000    
        time
                                                            656,538,000 755,802,000 782,141,000        907,271,000 991,388,000 1,024,587,000 1,137,152,000 1,204,021,000 665,773,000 714,873,000 721,779,000 745,476,000    
        issued and outstanding: 27,396 at september 30, 2012, 28,150 at december 31, 2011
                                                            371,211,000                      
        investment securities held to maturity, with fair values of: 1,232,813 at june 30, 2012, 947,493 at december 31, 2011
                                                             1,206,646,000                     
        issued and outstanding: 27,621 at june 30, 2012, 28,150 at december 31, 2011
                                                             372,631,000                     
        investment securities held to maturity, with fair values of: 1,061,439 at march 31, 2012, 947,493 at december 31, 2011
                                                              1,038,493,000                    
        issued and outstanding: 27,917 at march 31, 2012, 28,150 at december 31, 2011
                                                              375,750,000                    
        see accompanying notes to unaudited consolidated financial statements.
                                                                                  
        money market assets
                                                                  342,000 392,000 392,000 342,000 342,000 442,000 463,000 514,000 513,000 341,000 333,000 567,000 534,000    
        investment securities held to maturity, with fair values of 947,493 at december 31, 2011 and 594,711 at december 31, 2010
                                                               922,803,000                   
        common stock (no par value), authorized - 150,000 shares issued and outstanding – 28,150 at december 31, 2011 and 29,090 at december 31, 2010
                                                               377,775,000                   
        investment securities held to maturity, with fair values of: 778,330 at september 30, 2011, 594,711 at december 31, 2010
                                                                755,906,000                  
        deposits
                                                                                  
        issued and outstanding:
                                                                                  
        28,301 at september 30, 2011, 29,090 at december 31, 2010
                                                                374,398,000                  
        investment securities held to maturity, with fair values of: 687,326 at june 30, 2011, 594,711 at december 31, 2010
                                                                 669,452,000                 
        common stock (no par value), authorized - 150,000 shares issued and outstanding: 28,540 at june 30, 2011, 29,090 at december 31, 2010
                                                                 375,277,000                 
        investment securities held to maturity, with fair values of:
                                                                                  
        604,898 at march 31, 2011
                                                                  591,923,000                
        594,711 at december 31, 2010
                                                                                  
        interest receivable and other assets
                                                                  229,130,000 225,713,000 232,617,000 231,857,000 240,822,000 256,032,000 239,041,000 269,504,000 314,501,000 150,212,000 151,142,000 152,669,000 142,128,000 136,738,000 131,677,000  
        liability for interest, taxes and other incomes
                                                                  64,184,000 57,830,000 77,468,000 61,689,000 82,809,000 70,700,000 76,350,000 47,859,000 81,128,000 44,122,000 64,194,000 59,469,000 60,940,000 38,188,000 51,734,000  
        shareholders’ equity:
                                                                                  
        common stock (no par value), authorized — 150,000 shares
                                                                                  
        28,920 at march 31, 2011
                                                                  379,142,000                
        29,090 at december 31, 2010
                                                                                  
        investment securities held to maturity
                                                                   580,728,000    726,935,000           
        common stock
                                                                                  
        authorized — 150,000 shares
                                                                                  
        issued and outstanding — 29,090 at december 31, 2010 and 29,208 at december 31, 2009
                                                                   378,885,000               
        642,882 at september 30, 2010
                                                                    618,838,000              
        736,270 at december 31, 2009
                                                                                  
        29,118 at september 30, 2010
                                                                    376,123,000              
        29,208 at december 31, 2009
                                                                                  
        669,319 at june 30, 2010
                                                                     652,958,000             
        non-covered loans
                                                                     2,124,570,000 2,146,580,000 2,201,088,000 2,267,130,000 2,322,005,000 2,356,237,000        
        non-covered loans, net of allowance for loan losses
                                                                     2,084,854,000 2,106,264,000 2,160,045,000 2,224,447,000 2,278,883,000 2,312,434,000        
        covered loans
                                                                     763,619,000 809,503,000 855,301,000 932,656,000 1,031,643,000 1,089,071,000        
        29,118 at june 30, 2010
                                                                     372,989,000             
        cash and cash equivalents
                                                                      253,229,000 361,135,000 180,058,000 168,777,000 149,053,000 138,883,000 209,764,000 184,442,000 209,273,000 126,153,000 189,628,000  
        701,768 at march 31, 2010
                                                                      690,585,000            
        noninterest bearing
                                                                      1,376,760,000 1,428,432,000 1,377,215,000 1,334,871,000 1,353,696,000 1,158,632,000 1,245,500,000 1,341,019,000 1,419,313,000    
        interest bearing:
                                                                                  
        29,206 at march 31, 2010
                                                                      369,497,000            
        authorized - 150,000 shares
                                                                                  
        issued and outstanding - 29,208 at december 31, 2009 and 28,880 at december 31, 2008
                                                                       366,247,000           
        investment securities held to maturity, with market values of:
                                                                                  
        800,893 at september 30, 2009
                                                                        780,846,000          
        950,210 at december 31, 2008
                                                                                  
        preferred stock, authorized - 1,000 shares issued and outstanding:
                                                                                  
        42 at september 30, 2009
                                                                        41,335,000          
        29,207 at september 30, 2009
                                                                        365,547,000          
        28,880 at december 31, 2008
                                                                                  
        830,861 at june 30, 2009
                                                                         830,618,000         
        975,245 at june 30, 2008
                                                                                  
        preferred stock, authorized - 1,000,000 shares
                                                                                  
        83,726 at june 30, 2009
                                                                         82,611,000         
        29,214 at june 30, 2009
                                                                         365,355,000         
        28,889 at june 30, 2008
                                                                                  
        920,513 at march 31, 2009
                                                                          918,745,000        
        1,029,937 at march 31, 2008
                                                                                  
        preferred stock
                                                                          82,550,000        
        28,874 at march 31, 2009
                                                                          353,917,000        
        28,772 at march 31, 2008
                                                                                  
        investment securities held to maturity; market values of 950,210 in 2008 and 1,049,422 in 2007
                                                                           949,325,000       
        loans, net of an allowance for loan losses of:
                                                                                  
        44,470 in 2008 and 52,506 in 2007
                                                                           2,337,956,000       
        issued and outstanding — 28,880 in 2008 and 29,018 in 2007
                                                                           352,265,000       
        investment securities held to maturity; market values of 1,049,422 in 2007 and 1,155,736 in 2006
                                                                            1,045,288,000      
        52,506 in 2007 and 55,330 in 2006
                                                                            2,450,470,000      
        issued and outstanding - 29,018 in 2007 and 30,547 in 2006
                                                                            334,211,000      
        investment securities held to maturity; market values of 1,155,736 in 2006 and 1,323,782 in 2005
                                                                             1,165,092,000     
        55,330 in 2006 and 55,849 in 2005
                                                                             2,476,404,000     
        issued and outstanding - 30,547 in 2006 and 31,882 in 2005
                                                                             341,529,000     
        investment securities held to maturity; market values of 1,323,782 in 2005 and 1,265,986 in 2004
                                                                              1,337,216,000    
        55,849 in 2005 and 54,152 in 2004
                                                                              2,616,372,000    
        issued and outstanding - 31,882 in 2005 and 31,640 in 2004
                                                                              313,959,000    
        accumulated other comprehensive income:
                                                                                  
        unrealized gain on securities available for sale
                                                                              1,882,000    
        notes payable
                                                                               21,429,000 24,643,000  
        money market assets and funds sold
                                                                                 1,143,000 
        trading account securities
                                                                                  
        investment securities:
                                                                                  
        available for sale
                                                                                  
        held to maturity
                                                                                  
        loans:
                                                                                  
        commercial
                                                                                  
        real estate construction
                                                                                 55,457,000 
        real estate residential
                                                                                 331,822,000 
        consumer
                                                                                 505,435,000 
        earning assets
                                                                                 3,737,764,000 
        liabilities and shareholders’ equity
                                                                                  
        noninterest bearing demand
                                                                                 1,075,845,000 
        savings and interest-bearing transaction
                                                                                 1,492,611,000 
        time less than 100,000
                                                                                 334,601,000 
        time 100,000 or more
                                                                                 368,456,000 
        net interest spread
                                                                                 5,310 
        net interest income and interest margin
                                                                                 215,708,000 
        net interest spread represents the average yield earned on interest-earning assets less the average rate paid on interest-bearing liabilities.
                                                                                  
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-06-30 2025-03-31 2024-12-31 2024-06-30 2024-03-31 2023-12-31 2023-06-30 2023-03-31 2022-12-31 2022-06-30 2022-03-31 2021-12-31 2021-06-30 2021-03-31 2020-12-31 2020-06-30 2020-03-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-03-31 2010-12-31 2010-03-31 2009-12-31 2009-09-30 
                                                        
          operating activities:
                                                        
          net income
        27,355,000 27,807,000 60,103,000 31,037,000 31,700,000 71,879,000 36,417,000 39,468,000 80,699,000 40,451,000 39,344,000 47,930,000 22,616,000 21,720,000 42,726,000 20,147,000 23,838,000 36,524,000 16,962,000 59,661,000 39,271,000 19,646,000 19,055,000 35,516,000 17,506,000 4,160,000 15,017,000 15,799,000 15,049,000 15,628,000 14,546,000 14,226,000 14,578,000 14,857,000 14,761,000 14,557,000 15,154,000 15,157,000 15,307,000 16,738,000 17,112,000 17,271,000 -20,022,000 21,005,000 23,731,000 23,576,000 24,161,000 25,257,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                        
          depreciation and amortization/accretion
        929,000  4,221,000 2,009,000  5,816,000 2,962,000  5,752,000 3,044,000  10,508,000 5,498,000  7,363,000 4,256,000  12,361,000 6,304,000  9,852,000 4,809,000  12,594,000 1,643,000    5,754,000                    
          reversal of provision for credit losses
        -300,000                                                
          net amortization of deferred net loan cost
        67,000   83,000                         26,000                    
          stock option compensation expense
        225,000 300,000 600,000 300,000 339,000 773,000 364,000 339,000 678,000 339,000 292,000 678,000 339,000 319,000 776,000 368,000 375,000 1,050,000 525,000 1,484,000 1,082,000 541,000 413,000 1,050,000 525,000 456,000 456,000 456,000 456,000 390,000 362,000 390,000 285,000 315,000 318,000 354,000 309,000 341,000 359,000 351,000 351,000 379,000 -375,000 435,000 320,000 360,000 285,000 253,000 
          bank owned life insurance gains
         -208,000                                              
          income taxes payable
        6,123,000 -994,000 -376,000 5,538,000  -11,555,000 9,742,000 -44,192,000 28,144,000 14,336,000 -35,000 -442,000  -5,634,000 361,000   -585,000                               
          net changes in:
                                                        
          interest income receivable
        381,000 2,241,000 4,435,000 2,483,000 3,521,000 4,234,000 568,000 1,029,000 -222,000 -118,000 -4,052,000 -4,740,000  -2,217,000 -1,771,000   -3,526,000                               
          equity securities held for trading
        247,000 -30,000                                               
          net deferred tax asset
        4,171,000                                                
          other assets
        -1,496,000 -1,025,000 -56,000 827,000 -1,116,000 -48,000 596,000 -3,107,000 -1,377,000 380,000 2,902,000 -2,614,000  9,721,000 -1,483,000   -12,478,000                               
          interest expense payable
        130,000 -159,000 141,000 155,000 -149,000 3,711,000 1,009,000 -65,000 38,000 32,000 -31,000 31,000  -64,000 43,000   52,000                               
          other liabilities
        1,907,000 -2,153,000 -7,025,000 -4,649,000 -4,290,000 -6,558,000 -2,881,000 -1,215,000 -6,848,000 -3,508,000 649,000 -8,251,000  -17,212,000 2,220,000   28,875,000                               
          net cash from operating activities
        39,739,000 26,568,000 65,911,000 42,394,000 29,773,000 71,246,000 52,212,000 -7,981,000 107,662,000 55,082,000 41,819,000 42,423,000 31,823,000 17,605,000 45,466,000 32,272,000 11,504,000 65,923,000 54,451,000 64,661,000 39,541,000 23,437,000 16,205,000 49,900,000 26,476,000 15,668,000 24,702,000 15,110,000 25,274,000 23,330,000 17,630,000 18,218,000 12,697,000 23,179,000 17,218,000 17,310,000 12,758,000 11,792,000 33,746,000 28,210,000 26,386,000 22,501,000 -41,524,000 32,959,000 24,981,000 35,334,000 14,911,000 47,022,000 
          capital expenditures
        -1,940,000 -791,000 -258,000 -33,000 -13,580,000 
          free cash flows
        39,739,000 26,568,000 65,911,000 42,394,000 29,773,000 71,246,000 52,212,000 -7,981,000 107,662,000 55,082,000 41,819,000 42,423,000 31,823,000 17,605,000 45,466,000 32,272,000 11,504,000 65,923,000 54,451,000 64,661,000 39,541,000 23,437,000 16,205,000 49,900,000 26,476,000 15,668,000 24,702,000 15,110,000 25,274,000 23,330,000 17,630,000 18,218,000 12,697,000 23,179,000 17,218,000 17,310,000 12,758,000 11,792,000 33,746,000 28,210,000 26,386,000 22,501,000 -41,524,000 31,019,000 24,190,000 35,076,000 14,878,000 33,442,000 
          investing activities:
                                                        
          net repayments of loans
        30,089,000 14,701,000 71,432,000 48,871,000 13,045,000 33,851,000 20,787,000 18,520,000 37,370,000 19,213,000  68,235,000       4,545,000 73,026,000 44,721,000 1,836,000 -10,609,000 89,041,000 59,959,000 -3,254,000 33,467,000 34,326,000 1,526,000 66,598,000 43,905,000 61,070,000 39,478,000 57,795,000 53,015,000 13,805,000 50,734,000 32,783,000 9,598,000 63,502,000 94,620,000 72,880,000 -101,538,000 95,748,000 72,376,000 89,819,000 116,661,000 142,255,000 
          proceeds from bank owned life insurance policies
         904,000                                              
          purchases of debt securities available for sale
        -333,409,000 -316,319,000 -88,992,000 -38,994,000 -7,099,000 -4,767,000     -16,627,000 -619,601,000 -331,191,000 -315,571,000 -1,013,193,000 -385,553,000 -490,350,000 -869,942,000 -438,122,000 -732,690,000 -418,223,000 -219,414,000 -220,442,000 -439,212,000 -279,327,000                        
          proceeds from maturity/calls of debt securities available for sale
        183,592,000  327,019,000 241,235,000   98,966,000   147,030,000   154,734,000                                    
          proceeds from maturity/calls of debt securities held to maturity
        21,868,000 8,557,000 13,374,000 6,864,000 7,214,000 20,612,000 11,208,000 11,988,000 18,525,000 8,073,000 21,813,000 44,573,000 25,454,000 49,179,000 99,518,000 45,447,000 61,171,000 97,555,000 55,112,000 184,525,000 111,099,000 57,461,000 39,451,000 78,551,000 44,577,000                        
          purchases of premises and equipment
        -1,015,000 -626,000 -934,000 -199,000 -667,000 -583,000 -122,000 -264,000 -590,000 -511,000 1,000 -592,000 -198,000 -272,000 -800,000 -145,000 -518,000 -1,389,000 -1,796,000 -2,495,000 -1,425,000 -393,000 -293,000 -2,309,000 -1,413,000 -740,000 -930,000 -549,000 -501,000 -308,000 -708,000 -283,000 -425,000 -2,216,000 -507,000 -1,326,000 -696,000 -1,530,000 -166,000 -471,000 -493,000 -617,000 1,238,000      
          net cash from investing activities
        -98,875,000 -133,725,000 322,803,000 258,283,000 144,826,000 348,867,000 130,839,000 70,453,000 339,681,000 171,613,000 139,031,000 -373,332,000 -85,551,000 -37,424,000 -83,499,000 -9,296,000 83,230,000 -620,310,000 -113,700,000 28,671,000 105,968,000 50,226,000 -128,511,000 -53,386,000 -89,936,000 -82,627,000 -25,322,000 -9,444,000 44,135,000   58,195,000 -7,855,000 -20,788,000 62,655,000 -136,276,000 -61,313,000 63,481,000 -107,305,000 7,400,000 79,781,000 -76,580,000 -130,204,000 9,228,000 12,673,000 123,084,000 177,012,000 243,070,000 
          financing activities:
                                                        
          net change in deposits
        -56,267,000 46,840,000  -137,755,000 -53,200,000  -119,342,000 -224,746,000  -325,975,000 -269,966,000  -8,082,000 124,995,000  235,854,000 148,789,000  -13,195,000 -70,216,000 -136,577,000 -74,255,000 31,002,000  40,254,000 93,033,000 52,010,000 -15,403,000 -6,768,000  -31,436,000 -23,909,000 173,739,000 12,076,000 -25,230,000 30,891,000 108,258,000 -1,374,000 51,063,000 7,001,000 -60,465,000 -70,450,000 77,820,000 -716,000 60,907,000    
          net change in short-term borrowings
        7,158,000 3,647,000   -12,165,000   -57,179,000   -19,094,000   27,144,000   -5,428,000  21,736,000 -5,601,000 3,334,000 7,070,000 -10,509,000 10,423,000 6,885,000  -9,432,000 2,158,000 14,533,000          1,620,000   8,167,000  -9,005,000 -91,055,000    
          retirement of common stock
        -51,003,000 -23,334,000 -56,572,000 -18,225,000 -210,000 -210,000 -13,747,000 -13,747,000 -218,000 -218,000 -232,000 -232,000 -4,762,000 -9,866,000 -9,247,000 -488,000 -488,000  -524,000                       
          common stock dividends paid
        -11,269,000 -11,463,000 -23,772,000 -11,752,000 -11,742,000 -23,474,000 -11,735,000 -11,733,000 -22,495,000 -11,303,000 -11,303,000 -22,576,000 -11,284,000 -11,283,000 -22,006,000 -10,991,000 -11,022,000 -22,220,000 -11,104,000 -32,849,000 -21,786,000 -10,745,000 -10,691,000 -21,261,000 -10,608,000 -10,558,000 -10,261,000 -10,257,000 -10,223,000 -9,996,000 -9,997,000 -9,919,000 -9,956,000 -9,701,000 -9,712,000 -9,755,000 -9,868,000 -9,973,000 -10,086,000  -9,967,000 -10,084,000  -10,394,000     
          net cash from financing activities
        -111,381,000 15,690,000 -363,771,000 -174,835,000 -76,050,000 -124,303,000 60,885,000 -292,708,000 -475,392,000 -325,729,000 -300,279,000 -47,883,000 -40,764,000 140,856,000 356,687,000 222,206,000 127,577,000 681,786,000 -9,544,000 -97,977,000 -147,207,000 -72,159,000 9,930,000 57,630,000 44,065,000 80,204,000 33,015,000 -23,119,000 15,135,000 139,582,000 -17,653,000 -38,293,000 159,615,000 -23,410,000 -37,717,000 -14,420,000 87,989,000 -19,209,000 30,371,000 -31,307,000 -77,350,000 -81,844,000 124,689,000 -31,130,000 -43,030,000 -266,324,000 -10,846,000 -278,811,000 
          net change in cash and due from banks
        -170,517,000 -91,467,000 24,943,000 125,842,000 98,549,000 295,810,000 243,936,000 -230,236,000 -28,049,000 -99,034,000 -119,429,000 -378,792,000 -94,492,000 121,037,000 318,654,000 245,182,000 222,311,000 127,399,000 -68,793,000 -4,645,000 -1,698,000 1,504,000 -102,376,000 54,144,000 -19,395,000 13,245,000 32,395,000 -17,453,000 84,544,000 29,582,000 -29,379,000 38,120,000 164,457,000 -21,019,000 42,156,000 -133,386,000 39,434,000 56,064,000 -43,188,000 4,303,000 28,817,000 -135,923,000 -47,039,000 11,057,000     
          cash and due from banks at beginning of period
        567,801,000 601,494,000 601,494,000 190,314,000 190,314,000 294,236,000 294,236,000 1,132,085,000 1,132,085,000 621,275,000 621,275,000 373,421,000 373,421,000 420,284,000 420,284,000 420,284,000 575,002,000 575,002,000 462,271,000 433,044,000 380,836,000 472,028,000 491,382,000 530,045,000     
          cash and due from banks at end of period
        397,284,000 -91,467,000 626,437,000 727,336,000 98,549,000 486,124,000 434,250,000 -230,236,000 266,187,000 195,202,000 -119,429,000 753,293,000 1,037,593,000 121,037,000 939,929,000 866,457,000 222,311,000 500,820,000 304,628,000 415,639,000 418,586,000 421,788,000 -102,376,000 629,146,000 555,607,000 13,245,000 32,395,000 -17,453,000 546,815,000 29,582,000 -29,379,000 471,164,000 164,457,000 -21,019,000 42,156,000 247,450,000 39,434,000 56,064,000 428,840,000 4,303,000 28,817,000 355,459,000 -47,039,000 541,102,000     
          supplemental cash flow disclosures:
                                                        
          supplemental disclosure of noncash activities:
                                                        
          right-of-use assets acquired in exchange for operating lease liabilities
        335,000 1,290,000 5,360,000 3,494,000 517,000 2,970,000 2,641,000 1,706,000 3,934,000 1,144,000 608,000 2,462,000 918,000 133,000 4,918,000 3,301,000 1,240,000 1,639,000  23,587,000 23,087,000 19,444,000                           
          securities purchases pending settlement
        2,217,000     9,051,000      6,774,000   64,993,000 5,000,000  13,632,000 607,000 20,114,000    3,159,000   162,000   -26,317,000 -18,092,000 44,580,000   23,474,000 1,478,000 28,159,000 -14,306,000 -11,231,000          
          supplemental disclosure of cash flow activities:
                                                        
          cash paid for amounts included in operating lease liabilities
        1,675,000 1,660,000 3,271,000 1,636,000 1,636,000 3,269,000 1,632,000 1,613,000 3,052,000 1,519,000 1,484,000 3,038,000 1,518,000 1,518,000 3,241,000 1,618,000 1,611,000 3,276,000 1,659,000 5,123,000 3,411,000 1,750,000                           
          interest paid for the period
        3,165,000 3,641,000 6,444,000 3,241,000 3,615,000 4,597,000 1,992,000 1,744,000 1,040,000 439,000 506,000 932,000 451,000 568,000 916,000 459,000 520,000 825,000 432,000 1,417,000 874,000 486,000 492,000 885,000 444,000 494,000 482,000 451,000 504,000 589,000 520,000 526,000 592,000 667,000 499,000 775,000 1,002,000 970,000 987,000 1,260,000 1,590,000 1,132,000 -1,489,000 1,642,000 3,655,000 4,457,000 5,839,000 7,306,000 
          (reversal of) provision for credit losses
          -550,000 -550,000                                             
          net amortization of deferred loan fees
            84,000   -149,000   -259,000   -905,000   -1,639,000   -215,000 -215,000         -124,000 -103,000 -54,000 -47,000 -114,000 -71,000 -78,000 -45,000 -104,000 -30,000 -131,000 -122,000 -80,000 99,000 -126,000     
          losses on sale of securities
                                                        
          net gain on sale of other assets
                                                       
          net deferred taxes
                                                        
          proceeds from sale of other assets
                                                       
          proceeds from sale/maturity/calls of debt securities available for sale
            132,333,000 299,754,000  39,605,000 286,702,000   308,546,000  164,276,000 766,190,000 367,499,000 453,782,000 343,170,000 266,561,000 502,928,000 368,216,000 210,429,000 62,664,000 220,037,000 86,218,000                        
          purchase of federal reserve bank stock
                                                        
          exercise of stock options
           1,189,000 203,000     84,000 1,355,000 624,000 3,017,000 2,960,000 2,838,000  11,177,000 8,310,000  128,000 9,483,000   698,000          218,000   2,805,000   -1,887,000   3,697,000  24,000 
          excise tax on net common stock repurchases
                                                        
          supplemental disclosure of noncash activities
                                                        
          income tax payments for the period net of refunds:
                                                        
          federal
                                                        
          state - california
                                                        
          total income tax payments for the period net of refunds
                                                        
          depreciation and amortization
                           15,178,000       6,739,000   5,593,000 4,553,000 4,065,000  4,422,000 4,027,000 3,930,000 5,065,000 3,107,000 4,103,000 4,293,000 4,710,000 4,322,000 -3,537,000 3,499,000  3,411,000  584,000 
          (reversal of) credit provision for credit losses
                                                        
          net amortization of deferred loan cost
                                  13,000                   70,000 112,000 234,000 
          supplemental disclosure of non cash activities:
                                                        
          income tax payments for the period
          16,710,000  14,500,000 34,255,000     14,600,000 16,240,000  6,373,000 16,000,000  7,754,000 11,900,000  16,021,000 12,910,000  6,599,000 6,776,000  2,694,000 3,659,000 10,498,000 500,000 4,110,000 8,722,000 1,200,000 5,070,000 3,096,000   3,227,000   5,152,000 12,653,000 126,000 -5,835,000  10,810,000 3,500,000 9,299,000 8,409,000 
          amortization of deferred loan cost
          161,000                                              
          net change in:
                                                        
          deferred income taxes
          4,465,000   3,000,000   942,000   401,000   -1,429,000   478,000                               
          deposits
          -264,315,000   -342,827,000   -519,363,000   1,635,000   388,410,000   655,791,000                               
          short-term borrowings
          -19,112,000   242,005,000   80,213,000   -28,079,000   -12,502,000   55,243,000                               
          life insurance gains
           -102,000   -1,000   -7,000         -433,000 -433,000                           
          deferred tax asset
           5,263,000   3,285,000   254,000                                       
          proceeds from life insurance policies
           506,000               1,273,000 1,273,000                            
          net change in borrowings
           -7,103,000   192,172,000   25,296,000   -21,804,000   -5,385,000                                 
          provision (reversal of provision) for credit losses
             300,000 300,000                                          
          securities losses
               125,000                                        
          income taxes (receivable) payable
            -2,397,000                                            
          purchases of debt securities held to maturity
                  -174,493,000                                     
          proceeds from redemption of federal reserve bank stock
                                                        
          excise tax on 2023 net common stock repurchases
                                                        
          adjustments to reconcile net income to net cash provided by operating activities:
                                                        
          provision (reversal of credit provision) for credit losses
                                                        
          purchases of federal reserve bank stock
                -2,326,000 -2,192,000                                       
          amortization of deferred loan fees
             -306,000   -269,000   -1,078,000   -3,306,000   -1,057,000                               
          adjustments to reconcile net income to net cash provided by operating activities:
                                                        
          net amortization of deferred net loan fees
              -150,000   -128,000   -627,000   -1,246,000   -18,000   -215,000                           
          reversal of credit provision for credit losses
                                                        
          provision for credit losses
                        4,300,000                               
          securities gains
                     -34,000   -71,000                               
          gains on sales of premises and equipment
                                                        
          gain on disposal of premises and equipment
                                                        
          net deferred tax liability
                                                        
          net repayments (disbursements) of loans
                    65,650,000 64,964,000 64,786,000                                  
          proceeds from sale of premises and equipment
                                                        
          proceeds from sale of foreclosed assets
                           307,000 307,000 307,000 286,000 506,000 50,000 507,000 1,014,000 1,295,000 4,873,000 975,000 1,674,000 100,000 1,469,000 3,921,000 2,159,000 5,585,000 6,790,000 2,611,000 -6,523,000  20,792,000    
          adjustments to reconcile net income to net cash provided by operating activities:
                                                        
          decrease in interest income receivable
                    878,000   1,961,000   -201,000 323,000  1,887,000   1,019,000  1,128,000 -2,159,000 1,744,000 304,000 -1,208,000 1,379,000 -1,537,000 703,000 -758,000 812,000 1,432,000   1,332,000         
          increase in income taxes payable
                    7,662,000   7,450,000   4,572,000 -3,386,000  1,575,000 -206,000  4,302,000 -9,111,000 2,370,000 -2,805,000 2,896,000   3,424,000    4,695,000 -1,094,000 -5,298,000 5,232,000 826,000 -5,452,000 5,482,000 -1,686,000 7,386,000 -3,095,000 12,593,000 -1,495,000  
          increase in deferred tax asset
                    -298,000                       -421,000   -756,000   -673,000       
          increase in other assets
                    -238,000   -3,004,000   -3,625,000 -2,073,000 -20,013,000  -2,730,000   1,198,000     1,265,000 -5,602,000    -822,000   -185,000   -663,000 -3,231,000 -4,655,000  -8,655,000   
          increase in interest expense payable
                    29,000   16,000   10,000 19,000 44,000 8,000  50,000 15,000   25,000 8,000  21,000 25,000   4,000 21,000 -101,000 -6,000 5,000 41,000 -243,000 252,000  149,000  -66,000   
          increase in other liabilities
                    -4,036,000   2,796,000   24,743,000 -12,233,000 12,323,000  -4,373,000 137,000  -1,874,000 1,411,000    1,853,000 -4,000   3,911,000 -6,850,000  -1,360,000 8,507,000 4,498,000 1,244,000 -6,726,000 -10,536,000 1,771,000 -1,989,000 1,108,000  15,082,000 
          proceeds from sale of equity securities
                           1,797,000                             
          amount recognized upon initial adoption of asu 2016-02
                                                        
          credit loss provision
                          4,300,000                              
          decrease in deferred tax asset
                       -472,000   879,000   3,175,000   -20,000    1,441,000   115,000                 
          net (disbursements) repayments of loans
                       -36,544,000 55,212,000 -189,704,000                               
          increase in interest income receivable
                            -673,000   -1,375,000                  -199,000     1,737,000 -331,000 
          decrease in net deferred tax asset
                           6,386,000 4,902,000  402,000 -204,000  26,123,000 633,000   1,192,000   -138,000                
          decrease in interest expense payable
                                 -23,000       -30,000          -32,000    -122,000  
          net gain on sale of or write-down of foreclosed assets
                                                        
          amount recognized upon initial adoption of asu 2016-02 included above
                           15,325,000 15,325,000 15,325,000                           
          income taxes receivable
                                                        
          exercise of stock options/issuance of shares
                          2,266,000   5,771,000   7,534,000    17,593,000 1,528,000 8,343,000 1,717,000 1,246,000     10,853,000   6,156,000  641,000     
          loan collateral transferred to other real estate owned
                                     271,000 217,000 1,682,000 27,000 3,202,000 968,000 1,472,000 3,292,000 640,000 -2,254,000   6,092,000  9,136,000 
          reversal of provision for loan losses
                                                       
          gain on sale of other assets
                                            -400,000 -274,000 -274,000 400,000 -150,000     
          loss on disposal of premises and equipment
                                                        
          net loss on sale of or write-down of foreclosed assets
                                                        
          net payments under fdic indemnification agreements
                                                        
          provision for loan losses
                                                        
          equity securities losses
                           -50,000 -50,000 -24,000 -14,000 50,000 36,000                        
          net writedown of premises and equipment
                               3,000                        
          net gain on sale of foreclosed assets
                               -46,000   -17,000 -55,000 -165,000 -959,000 -58,000     -204,000 -317,000 -493,000 -336,000 -375,000 -181,000 504,000 -1,779,000     
          writedown of foreclosed assets
                               27,000      1,000 632,000 126,000  72,000 243,000 5,000 39,000 69,000 690,000 470,000 592,000 -1,108,000 1,712,000     
          decrease in income taxes receivable
                            -6,549,000   2,556,000                         
          decrease in other assets
                             -1,952,000  60,000 2,676,000   260,000 895,000    -1,935,000 1,171,000   -36,000            
          decrease in other liabilities
                             -6,013,000   -984,000    -2,864,000                    
          writedown of premises and equipment
                                1,000                        
          tax benefit increase upon exercise and expiration of stock options
                                     -12,000                   
          gain on sale of securities
                                                        
          proceeds from life insurance
                              -14,000                          
          taxes paid by withholding shares for tax purposes
                                                        
          net amortization of deferred loan (fees) cost
                                                        
          life insurance premiums paid
                               -406,000 -203,000 -716,000 -126,000                    
          net change in frb stock
                                  -23,000                      
          net amortization of deferred loan (fees) costs
                               -112,000                         
          net increase in deposits
                               59,509,000                         
          net amortization of deferred net loan (fees) cost
                                -40,000                        
          net receipts under fdic indemnification agreements
                                    129,000                    
          proceeds from sale of frb stock
                                    24,000                    
          (reversal of) provision for loan losses
                                                        
          tax benefit decrease upon exercise and expiration of stock options
                                     12,000                   
          write-down/net loss on sale of premises and equipment
                                                        
          net loss/write-down (gain) on sale of foreclosed assets
                                                        
          change in payable to fdic1
                                                        
          purchases of investment securities available for sale
                                 -202,289,000 -179,867,000 -202,361,000 -51,297,000 -552,110,000 -108,459,000 -152,128,000 -118,625,000 -201,005,000 -272,637,000 -354,527,000 -365,507,000 -144,175,000 -237,948,000 -79,980,000 -99,559,000 -175,901,000 73,971,000 -25,418,000 -202,529,000 -53,537,000   
          proceeds from sale/maturity/calls of securities available for sale
                                 80,436,000 67,256,000 124,032,000 47,600,000 288,402,000 178,370,000 166,023,000 108,268,000 254,142,000 419,635,000 185,073,000 219,129,000 126,427,000 99,350,000 23,102,000 47,392,000 30,166,000 -46,667,000 31,317,000     
          purchases of investment securities held to maturity
                                     -190,774,000 -56,182,000 -71,688,000 -176,615,000 -179,273,000 -10,359,000 -8,062,000 -380,000 -17,993,000 -64,473,000 -27,966,000 -59,677,000 5,548,000 -151,958,000     
          proceeds from maturity/calls of securities held to maturity
                                 43,221,000 54,775,000 34,793,000 45,640,000 59,711,000 48,528,000 33,531,000 35,137,000 45,437,000 41,972,000 30,468,000 41,620,000 39,776,000 34,403,000 56,941,000 55,552,000 51,876,000 -50,283,000 48,123,000 38,110,000 36,350,000 53,911,000 50,294,000 
          net change in fhlb2 securities
                                                        
          net change in short-term borrowings and fhlb2 advances
                                                        
          tax benefit increase upon expiration/exercise of stock options
                                                        
          net (payments) receipts under fdic indemnification agreements
                                                       
          writedown/loss on sale of premises and equipment
                                    50,000   5,000    4,000   16,000          
          net writedown/loss on sale of premises and equipment
                                                        
          change in payable to fdic
                                     3,082,000 -5,091,000 5,189,000                 
          net change in frb/fhlb securities
                                                        
          net increase in short-term borrowings and fhlb advances
                                                        
          loan loss provision
                                            600,000 1,000,000 1,000,000 1,800,000 1,800,000 2,800,000 -2,800,000 2,800,000 2,800,000 2,800,000 3,300,000 2,800,000 
          decrease in income taxes payable
                                         383,000               
          net writedown of/loss on sale of premises and equipment
                                                        
          net cash from (used in) investing activities
                                                        
          net change in short-term borrowings and fhlb advances
                                      15,401,000 -577,000                 
          retirement of common stock including repurchases
                                      -356,000 -5,424,000 -64,000 -1,338,000 -5,823,000 -7,867,000 -8,455,000 -13,645,000 -22,710,000  -11,951,000 -15,442,000  -11,660,000     
          tax benefit decrease upon expiration/exercise of stock options
                                       181,000 69,000 9,000 341,000 865,000             
          proceeds from sale of frb/fhlb stock
                                                        
          gain on sale of real estate and other assets
                                                        
          originations of mortgage loans for resale
                                               -201,000 -150,000 -90,000 570,000  -55,000    
          proceeds from sale of mortgage loans originated for resale
                                                149,000 92,000       
          proceeds from fdic loss-sharing indemnification
                                                        
          net change in frb/fhlb(3) securities
                                                        
          repayments of debt financing
                                                        
          repayments of term repurchase agreement
                                                        
          net loss on sale of premises and equipment
                                         13,000   5,000            
          proceeds from fdic1 loss-sharing indemnification
                                              2,439,000   -5,509,000      
          net change in frb2/fhlb3 securities
                                             755,000   -441,000      
          net change in short-term borrowings and fhlb3 advances
                                         -25,684,000 -213,000 -26,824,000 -2,113,000   -18,818,000   25,952,000      
          increase in net deferred tax asset
                                            2,605,000   -1,075,000   1,095,000      
          proceeds from fdic1 loss-sharing agreement
                                                        
          proceeds from sale of frb2/fhlb3 stock
                                           490,000             
          tax benefit decrease upon exercise of stock options
                                            51,000 27,000 369,000          
          decrease (increase) in interest income receivable
                                              643,000     733,000 352,000 258,000   
          proceeds from fdic* loss-sharing agreement
                                              44,000   1,344,000  2,628,000     
          proceeds from sale of frb/fhlb** stock
                                              3,248,000   738,000  451,000     
          u.s. treasury securities
                                              3,499,000 -4,000 -5,000 3,516,000       
          securities of u.s. government sponsored entities
                                              329,589,000 57,111,000 -5,537,000 44,236,000       
          residential mortgage-backed securities
                                              30,154,000 -4,670,000 -6,224,000 45,756,000       
          commercial mortgage-backed securities
                                              3,216,000 -157,000 -111,000 3,827,000       
          obligations of states and political subdivisions
                                              180,011,000 -3,203,000 -3,959,000 195,326,000       
          residential collateralized mortgage obligations
                                              259,615,000 -10,226,000 17,388,000 268,282,000       
          asset-backed securities
                                              9,322,000 -348,000 -358,000 15,686,000       
          fhlmc and fnma stock
                                              804,000 -1,000 825,000       
          corporate securities
                                              406,526,000 17,749,000 50,261,000 365,847,000       
          other securities
                                              2,039,000 -9,000 2,058,000       
          total
                                              1,224,775,000 56,252,000 51,445,000 945,359,000       
          decrease (increase) in other assets
                                               -830,000       -18,311,000 -7,510,000 
          loss on sale of securities available for sale
                                                       
          net income on sale of premises and equipment
                                               7,000         
          net proceeds from sale of mortgage loans originated for resale
                                                  -598,000  56,000    
          repurchases/retirement of stock
                                                  12,605,000   -4,804,000  -403,000 
          dividends paid
                                                  10,188,000   -10,536,000  -10,224,000 
          tax benefit decrease (increase) upon exercise of stock options
                                                10,000 191,000       
          tax benefit increase upon exercise of stock options
                                                -10,000 -191,000 7,000 -4,000     
          loss on sale of premises and equipment
                                                 6,000       
          net writedown (gain) on sale of premises and equipment
                                                        
          westamerica bancorporation
                                                        
          consolidated statements of cash flows
                                                        
          net gain on sale of premises and equipment
                                                        
          repayments of notes payable and debt financing
                                                       -34,000 
          decrease in deferred taxes receivable
                                                   183,000     
          loss on sale of property and equipment
                                                        
          proceeds from sale of property acquired in satisfaction of debt
                                                   10,277,000  4,860,000 1,073,000 4,452,000 
          purchases of property, plant and equipment
                                                   -1,940,000 -791,000 -258,000 -33,000 -13,580,000 
          supplemental disclosure of noncash activities: loan collateral transferred to other real estate owned
                                                   1,583,000     
          see accompanying notes to unaudited consolidated financial statements.
                                                        
          * federal deposit insurance corporation
                                                        
          ** federal reserve bank/federal home loan bank
                                                        
          gain on acquisition
                                                       
          stock option tax benefits
                                                     -259,000  
          proceeds from fdic* loss-sharing indemnification
                                                        
          proceeds from maturity/calls of securities available for sale
                                                    78,990,000 22,621,000 28,912,000 22,896,000 
          net change in frb**/fhlb*** securities
                                                        
          net cash acquired from acquisitions
                                                       
          acquisitions:
                                                        
          assets acquired
                                                      
          liabilities assumed
                                                      
          net
                                                      
          write-down of foreclosed assets
                                                        
          net change in frb/fhlb* securities
                                                        
          statement of net assets acquired
                                                        
          assets
                                                        
          cash and due from banks
                                                        
          money market assets
                                                        
          securities
                                                        
          loans
                                                        
          other real estate owned
                                                        
          core deposit intangible
                                                        
          total assets
                                                        
          liabilities
                                                        
          federal home loan bank advances
                                                        
          total liabilities
                                                        
          net assets acquired
                                                        
          decrease in deferred taxes
                                                        
          excess tax benefits from stock-based compensation
                                                        
          gain on sale of property and equipment
                                                     -463,000   
          net (gain) loss on sale of foreclosed assets
                                                        
          proceeds from fdic loss-sharing agreement
                                                     19,863,000   
          proceeds from sale of frb/fhlb* stock
                                                     2,763,000  
          proceeds from sale of property, plant and equipment
                                                     603,000   
          exercise of stock options/issurance of shares
                                                        
          *
                                                        
          increase in deferred taxes
                                                        
          loss on sale and impairment of investment securities
                                                        
          gain on sale of visa common stock
                                                        
          net (gain) loss on sales/write-down of fixed assets
                                                        
          net write-down/(gain)loss on sale of foreclosed assets
                                                        
          investing activities
                                                        
          net cash acquired from acquisition
                                                        
          purchases of securities held to maturity
                                                        
          proceeds from sale of branch, property and equipment
                                                        
          purchases of frb/fhlb* securities
                                                        
          proceeds from sale of frb/fhlb/fhlmc* securities
                                                        
          proceeds from sale of visa common stock
                                                        
          financing activities
                                                        
          repayments of notes payable
                                                        
          proceeds from issuance of preferred stock and warrants
                                                        
          redemption of preferred stock
                                                      -41,863,000  
          preferred stock dividends
                                                        
          cash and due from banks at beginning of year
                                                        
          cash and due from banks at end of year
                                                        
          supplemental disclosures:
                                                        
          loans transferred to other real estate owned
                                                        
          increase in unrealized gains on securities available for sale, net of tax
                                                        
          supplemental disclosure of cash flow activity:
                                                        
          net (gain on sale) writedown of property and equipment
                                                        
          proceeds from issuance of preferred stock
                                                       
          preferred dividends
                                                       -1,145,000 
          net change in cash and cash equivalents
                                                        
          unrealized gain on securities available for sale
                                                     1,073,000  4,297,000 
          net gain on sale of property acquired in satisfaction of debt
                                                     352,000  31,000 
          writedown of property acquired in satisfaction of debt
                                                     249,000  
          net decrease in deposits
                                                     -164,280,000 36,802,000 -130,491,000 
          net decrease in short-term borrowings
                                                     -90,660,000  -94,675,000 
          net increase in cash and cash equivalents
                                                     -107,906,000 181,077,000 11,281,000 
          cash and cash equivalents at beginning of period
                                                     361,135,000  
          cash and cash equivalents at end of period
                                                     253,229,000  11,281,000 
          increase increase in other liabilities
                                                        
          gain on sale of branch
                                                        
          net income on sales/write-down of fixed assets
                                                        
          originations of loans for resale
                                                      
          net proceeds from sale of loans originated for resale
                                                      
          net write-down/loss on sale of property acquired in satisfaction of debt
                                                        
          proceeds from sale of property and equipment
                                                        
          net increase in short-term borrowings
                                                        
          cash and cash equivalents at beginning of year
                                                        
          cash and cash equivalents at end of year
                                                        
          unrealized gain on securities available for sale, net of tax
                                                        
          fas 141r gain
                                                       
          impairment of investment securities
                                                        
          writedown of property and equipment
                                                        
          proceeds from sale of securities available for sale
                                                        
          proceeds from fdic loss-sharing receivable
                                                        
          net write-down of property acquired in satisfaction of debt
                                                        
          proceeds from sale of other real estate owned
                                                        
          supplemental disclosure of cash flow activity: interest paid for the period
                                                        
          net amortization of loan fees, net of cost
                                                        
          loss on sale of securities
                                                        
          net write-down (gain on sale) of property acquired in satisfaction of debt
                                                        
          net cash issued in mergers and acquisitions
                                                        
          proceeds from maturity/sale of money market assets
                                                        
          purchases of frb/fhlb securities
                                                        
          proceeds from sale of frb/fhlb securities
                                                        
          the acquisition of redwood empire bancorp involved the following:
                                                        
          cash issued
                                                        
          common stock issued
                                                        
          fair value of liabilities assumed
                                                        
          fair value of assets acquired, other than cash and cash equivalents
                                                        
          customer based intangible — merchant draft processing
                                                        
          goodwill
                                                        
          net cash received
                                                        
          loss on extinguishment of debt
                                                        
          net cash provided (used) in investing activities
                                                        
          repayments to the federal home loan bank
                                                        
          excess tax benefit from stock-based compensation
                                                        
          net cash (used) provided by financing activities
                                                        
          depreciation and amortization of fixed assets
                                                        
          amortization of intangibles and other assets
                                                        
          net (amortization) deferral of loan fees, net of cost
                                                        
          gain on sale of real estate
                                                        
          write-downs of other real estate owned
                                                        
          (repayments) advances of notes payable
                                                        
          unrealized loss on securities available for sale
                                                        
          tax benefit from stock option exercises
                                                        
          amortization of deferred net loan (cost) fees
                                                        
          gain on other assets
                                                        
          net cash obtained in mergers and acquisitions
                                                        
          purchases of money market assets
                                                        
          advances from the federal home loan bank
                                                        
          depreciation of fixed assets
                                                        
          amortization of deferred net loan fees
                                                        
          net gainon sales/write-down of fixed assets
                                                        
          repayments to the fhlb
                                                        
          advances from the fhlb
                                                        
          advances (repayments) of notes payable
                                                        
          the acquisition of kerman state bank involved the following:
                                                        
          net gain on sales/write-down of fixed assets
                                                        
          proceeds from maturity of securities available for sale
                                                        
          proceeds from maturity of securities held to maturity
                                                        
          net increase in fhlb advances
                                                        
          the acquisition of first counties bank involved the following: