7Baggers

Emerald Holding, Inc
(NYSE:EEX) 

EEX stock logo

Emerald Holding, Inc. operates business-to-business (B2B) trade shows in the United States. The company operates trade shows in various industry sectors, including retail, design and construction, technology, equipment, and safety. It also operates content and content-marketing websites, and related...

Full Time Employees: 548
Sector: Communication Services
Industry: Advertising Agencies
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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 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 
                                       
      revenues
    		132,700,000 77,500,000 105,500,000 147,700,000 106,800,000 72,600,000 86,000,000 133,400,000 101,500,000 72,500,000 86,500,000 122,300,000 93,600,000 62,400,000 71,400,000 98,500,000 -63,300,000 76,500,000 15,000,000 -103,000,000 8,500,000 7,000,000 99,700,000 360,899,684 75.6 103,000,000 137,400,000 56,999,676.3 103.1 78,400,000 142,200,000 31,503,000 100,404,000 74,139,000 135,654,000 
      other income
    		    500,000   1,000,000  2,800,000    151,000,000 8,100,000 28,800,000 42,400,000 1,100,000 2,300,000 -21,600,000 16,100,000 48,200,000  6,099,993.9 6.1       -19,000 6,519,000   
      cost of revenues
    		51,400,000 25,300,000 40,600,000 51,400,000 43,800,000 23,100,000 33,100,000 47,500,000 35,700,000 25,900,000 32,800,000 43,200,000 33,200,000 22,700,000 26,400,000 34,200,000 -27,100,000 33,700,000 3,600,000 -36,600,000 4,300,000 -800,000 43,600,000 120,199,897.2 24.6 32,300,000 45,900,000 20,399,908.3 25.9 24,400,000 41,400,000 9,621,000 27,221,000 21,569,000 36,589,000 
      selling, general and administrative expense
    		88,700,000 51,300,000 47,100,000 54,100,000 34,600,000 40,800,000 39,500,000 55,500,000 36,100,000 41,600,000 41,800,000 48,800,000 17,400,000 48,700,000 32,300,000 46,600,000 25,675,000 38,800,000 33,100,000 22,200,000 25,600,000 25,100,000 38,100,000 133,399,898.1 33.7 33,100,000 35,100,000 22.5 29.7 28,000,000 32,300,000 25,979,000 29,411,000 34,545,000 31,965,000 
      depreciation and amortization expense
    		8,300,000 8,700,000 7,600,000 6,400,000 7,100,000 7,100,000 7,000,000 7,100,000 9,800,000 8,800,000 12,900,000 13,500,000 16,500,000 14,700,000 14,000,000 14,300,000 -24,600,000 12,200,000 12,100,000 -25,800,000 12,200,000 12,200,000 12,800,000 51,999,960.7 12.9 13,200,000 13,200,000 12,599,965.8 11.4 11,400,000 11,400,000 10,950,000 10,848,000 10,827,000 10,575,000 
      intangible asset impairment charges
    		    1,575,000 6,300,000              14,850,000   59,400,000             
      operating income
    		-15,700,000 -7,800,000 10,200,000 35,800,000 20,800,000 -4,700,000 6,400,000 24,300,000 19,900,000 -1,000,000 -1,000,000 16,800,000 26,500,000 127,300,000 6,800,000 24,300,000 53,300,000 -7,100,000 -31,500,000 563,400,000 -17,500,000 18,700,000 -618,200,000 -24,700,051.8 -15.8 24,400,000 43,200,000 -112,100,107.8 36.1 14,600,000 57,100,000 -15,066,000 39,443,000 7,198,000 56,525,000 
      yoy
    		-175.48% 65.96% 59.38% 47.33% 4.52% 370.00% -740.00% 44.64% -24.91% -100.79% -114.71% -30.86% -50.28% -1892.96% -121.59% -95.69% -404.57% -137.97% -94.90% -2380.97% 110759393.67% -23.36% -1531.02% -77.97% -143.77% 67.12% -24.34% 644.06% -100.00% 102.83% 1.02%     
      qoq
    		101.28% -176.47% -71.51% 72.12% -542.55% -173.44% -73.66% 22.11% -2090.00% 0.00% -105.95% -36.60% -79.18% 1772.06% -72.02% -54.41% -850.70% -77.46% -105.59% -3319.43% -193.58% -103.02% 2402.83% 156329341.77% -100.00% -43.52% -138.54% -310526714.40% -100.00% -74.43% -479.00% -138.20% 447.97% -87.27%  
      interest expense
    		9,800,000 10,700,000 10,900,000 17,400,000 11,400,000 12,300,000 12,000,000 12,100,000 11,800,000 12,100,000 11,400,000 8,000,000 9,000,000 6,800,000 4,600,000 3,900,000 -8,200,000 3,900,000 4,100,000 -12,400,000 4,200,000 5,600,000 6,700,000 30,299,976.7 7.5 7,800,000 8,000,000 7,999,978.9 7.3 7,300,000 6,500,000 5,066,000 6,737,000 16,849,000 9,648,000 
      interest income
    		400,000 600,000 1,300,000 2,300,000 1,900,000 2,200,000 2,100,000 2,300,000 3,200,000 1,600,000 2,300,000 1,100,000 1,600,000 800,000                      
      income before income taxes
    		-25,000,000 -17,900,000 600,000 20,700,000 11,300,000 -14,800,000 -3,500,000 14,500,000 11,400,000 -11,600,000 -12,500,000 9,800,000 19,300,000 121,200,000 2,200,000 20,400,000 61,000,000 -11,000,000 -35,600,000 575,800,000 -21,700,000 13,100,000 -624,900,000 -55,000,028.5 -23.3 16,600,000 35,200,000 -120,100,086.7 28.8 7,300,000 50,600,000 -22,916,000 32,706,000 -9,867,000 46,877,000 
      provision for income taxes
    		5,200,000 -3,500,000 2,000,000 5,400,000   -700,000 3,500,000 29,300,000 -22,300,000 -4,400,000 2,700,000 -3,100,000 28,200,000 2,900,000  -2,500,000 -2,000,000 10,900,000 58,400,000 -6,400,000 3,200,000 -54,800,000 2.575 -3.6 5,200,000 8,700,000 -30,100,021.8 7.9 1,400,000 12,500,000 -62,976,000 13,499,000 -4,053,000 18,530,000 
      net loss attributable to emerald holding, inc.
    		-125,000 -14,400,000                                  
      accretion to redemption value of redeemable convertible preferred stock
    		      -2,000,000 -10,700,000 -10,800,000 -10,700,000 -10,400,000 -10,100,000 -10,100,000 -9,900,000 -9,600,000 -9,200,000 17,000,000 -9,000,000                  
      net loss attributable to emerald holding, inc. common stockholders
    		-30,200,000 -14,400,000                                  
      basic loss per share
    		 -0.07   -0.028 -0.05 -0.03    -0.29    -0.15  -0.338 -0.25                  
      diluted loss per share
    		 -0.07   -0.028 -0.05 -0.03    -0.29    -0.15  -0.338 -0.25                  
      basic weighted-average common shares outstanding
    		198,729 197,950 198,650 200,596 156,592 203,893 155,915 63,039 63,959 63,586 62,868 67,280 69,002 68,433 69,816 70,171 70,088 71,033 71,938 71,413 71,484 71,444 71,381 71,719 71,796 71,905 71,825 72,868 73,063 72,896 72,715 68,912 72,202 69,102 61,866 
      diluted weighted-average common shares outstanding
    		198,729 197,950 198,650 200,841 156,592 203,893 155,915 65,205 63,959 63,586 62,868 67,280 69,148 68,643 69,816 70,280 70,088 71,033 71,938 71,413 71,484 71,470 71,381 71,719 71,796 72,965 73,029 72,868 75,398 75,821 75,819 72,116 75,710 69,102 63,785 
      net income attributable to emerald holding, inc.
    		  -1,400,000                                 
      net income attributable to emerald holding, inc. common stockholders
    		  -1,400,000                                 
      basic income per share
    		  -0.01 0.08     -0.45   -0.04 0.06 0.42     -0.75                 
      diluted income per share
    		  -0.01 0.08     -0.45   -0.04 0.06 0.41     -0.75                 
      net income and comprehensive income attributable to emerald holding, inc.
    		   15,300,000 5,100,000 -11,100,000 -2,800,000 11,000,000 2,425,000 10,700,000  7,100,000                        
      participation rights on if-converted basis
    		       -200,000     -8,300,000 -54,700,000  -8,600,000                    
      net income and comprehensive income attributable to emerald holding, inc. common stockholders
    		   15,300,000    100,000 -28,700,000   -3,000,000 4,000,000 28,400,000     -53,900,000                 
      loss on extinguishment of debt
    		          2,300,000                     2,784,000  216,000  
      other expense
    		        75,000 100,000 100,000 100,000 50,000 100,000                      
      benefit from income taxes
    		    -225,000 -3,700,000          -2,200,000                    
      net loss and comprehensive loss attributable to emerald holding, inc. common stockholders
    		    -3,900,000 -11,100,000 -4,800,000    -18,500,000    -10,300,000  -24,275,000 -18,000,000                  
      goodwill impairment charge
    		               6,300,000                    
      intangible asset impairment charge
    		               1,600,000                    
      net income and comprehensive (loss) income attributable to emerald holding, inc.
    		          -8,100,000                         
      net income and comprehensive income
    		            22,400,000 93,000,000  22,600,000   -46,500,000 -143,875,000 -15,300,000 9,900,000 -570,100,000   11,400,000 26,500,000 -90,000,064.9 20.9 5,900,000 38,100,000 40,060,000 19,207,000 -5,814,000 28,347,000 
      net income and comprehensive (loss) income
    		              -700,000         4.55 -19.7           
      net gain and comprehensive gain attributable to emerald holding, inc. common stockholders
    		               4,800,000                    
      basic gain per share
    		               0.07                    
      diluted gain per share
    		               0.07                    
      net loss and comprehensive loss
    		                -17,700,000 -9,000,000                  
      balances at june 30, 2021
    		                17,879.5 71,442                  
      stock-based compensation
    		                13.75                   
      issuance of common stock under equity plans
    		                5                   
      repurchase of common stock
    		                -298.25                   
      balances at september 30, 2021
    		                17,600 71,442                  
      balances at december 31, 2020
    		                18,048.75 71,445                  
      redeemable convertible preferred stock conversion
    		                1.25 -3                  
      accretion on 7% series a convertible participating preferred stock
    		                  -7,400,000 -1,775,000 -7,000,000               
      goodwill impairment charges
    		                   141,000,000   564,000,000             
      net income and comprehensive income attributable to emerald holding, inc. common shareholders
    		                   -145,650,000 -22,300,000 9,600,000              
      basic earnings per share
    		                   7.25 -0.31 0.13 -7.99 -0.95 -0.27 0.16 0.37 -2.13 0.29 0.08 0.52 0.57 0.27 -0.08 0.46 
      diluted earnings per share
    		                   7.25 -0.31 0.13 -7.99 -0.95 -0.27 0.16 0.36 -2.1 0.28 0.08 0.5 0.54 0.25 -0.08 0.44 
      accretion on and net income allocated to 7% series a convertible participating preferred stock
    		                     -300,000              
      goodwill and intangible asset impairment charges
    		                       6.575 26.3           
      dividend declared per common share
    		                           -0.143 0.073 0.073 0.07 0.035 0.07 0.07  
    Balance Sheets:
    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 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 
                                          
        assets
      		                                    
        current assets
      		                                    
        cash and cash equivalents
      		100,900,000 95,400,000 156,400,000 276,800,000 194,800,000 188,900,000 193,200,000 186,800,000 204,200,000 200,300,000 204,700,000 217,300,000 239,100,000 366,100,000 181,700,000 254,400,000 231,200,000 303,600,000 302,800,000 293,600,000 295,300,000 326,700,000 218,600,000 50,000,000 9,600,000 13,600,000 12,400,000 10,900,000 20,500,000 13,800,000 34,500,000 27,000,000 10,900,000 14,021,000 9,945,000 15,850,000 
        trade and other receivables, net of allowances of 3.9 million and 1.6 million, as of december 31, 2025 and 2024, respectively
      		99,000,000                                    
        prepaid expenses and other current assets
      		35,400,000 41,200,000 20,600,000 15,100,000 29,600,000 37,000,000 24,200,000 16,500,000 21,500,000 49,400,000 17,600,000 10,800,000 17,800,000 18,600,000 17,700,000 13,500,000  9,200,000 14,200,000 18,500,000                 
        total current assets
      		235,300,000 231,900,000 279,000,000 413,600,000 306,900,000 312,300,000 311,300,000 326,400,000 310,900,000 328,300,000 314,500,000 332,900,000 331,800,000 467,500,000 329,100,000 354,100,000 290,100,000 351,700,000 358,600,000 356,800,000 352,300,000 388,100,000 312,500,000 117,500,000 93,700,000 102,600,000 100,800,000 115,500,000 103,000,000 113,100,000 127,000,000 142,600,000 93,500,000 121,613,000 93,987,000 114,792,000 
        noncurrent assets
      		                                    
        intangible assets
      		181,400,000 190,600,000 184,500,000 155,900,000 155,900,000 162,200,000 171,400,000 175,000,000 175,100,000 182,700,000 188,100,000 198,300,000 204,800,000 216,700,000 226,600,000 226,200,000 236,700,000 248,000,000 258,400,000 264,200,000 275,000,000 280,500,000 291,500,000 302,500,000 373,800,000 380,700,000 409,900,000 422,500,000  528,700,000 523,800,000 534,700,000     
        goodwill
      		783,600,000 781,400,000 726,700,000 601,800,000 573,800,000 573,400,000 567,500,000 565,700,000 553,900,000 553,900,000 553,900,000 553,900,000 545,500,000 545,500,000 537,500,000 513,900,000 514,200,000 407,900,000 407,900,000 404,300,000 404,300,000 416,300,000 416,300,000 416,300,000 980,300,000 1,027,200,000 1,036,500,000 1,036,500,000 1,036,500,000 1,005,800,000 993,100,000 993,100,000 993,700,000 971,537,000 971,537,000 960,683,000 
        other noncurrent assets
      		12,500,000 4,000,000 4,100,000 4,200,000 3,900,000 3,300,000 3,200,000 3,400,000 3,700,000 3,800,000 3,400,000 3,400,000 3,500,000 2,600,000 2,600,000 2,400,000 2,600,000 2,400,000 2,300,000 2,100,000 2,900,000 1,500,000 1,200,000 2,900,000 1,400,000 1,300,000 1,700,000 1,700,000 1,500,000 1,700,000 1,600,000 1,900,000 1,900,000 1,658,000 2,010,000 977,000 
        total assets
      		1,212,800,000 1,217,300,000 1,202,100,000 1,183,000,000 1,048,700,000 1,059,800,000 1,062,600,000 1,080,400,000 1,053,900,000 1,081,000,000 1,072,900,000 1,100,500,000 1,098,400,000 1,250,800,000 1,114,700,000 1,115,300,000 1,062,400,000 1,030,100,000 1,047,000,000 1,046,500,000 1,054,400,000 1,107,300,000 1,043,500,000 861,100,000 1,471,700,000 1,534,300,000 1,571,400,000 1,598,900,000 1,580,000,000 1,653,100,000 1,649,400,000 1,676,200,000 1,637,900,000 1,628,030,000 1,611,458,000 1,625,086,000 
        liabilities and stockholders’ equity
      		                                    
        current liabilities
      		                                    
        accounts payable and other current liabilities
      		43,700,000 43,900,000 49,600,000 61,000,000 40,700,000 46,300,000 48,300,000 61,100,000 46,600,000 46,200,000 50,200,000 54,700,000 58,100,000 65,000,000 66,200,000 54,000,000 51,800,000 54,100,000 34,100,000 28,600,000 31,100,000 21,400,000 32,700,000 34,500,000 22,200,000 40,200,000 32,400,000 44,400,000 30,500,000 35,200,000 31,400,000 41,700,000 25,000,000 44,191,000 36,446,000 43,499,000 
        income tax payable
      		2,100,000 1,100,000 1,700,000 1,900,000    1,900,000 200,000  1,100,000 2,300,000 1,200,000 28,000,000                       
        cancelled event liabilities
      		1,000,000 1,000,000 1,100,000 1,200,000 1,200,000 1,700,000 600,000 800,000 600,000 700,000 2,700,000   4,400,000 4,400,000 6,300,000 9,800,000 21,600,000 8,500,000 13,700,000 25,900,000 24,900,000 45,600,000 72,100,000             
        deferred revenues
      		219,200,000 229,000,000 199,900,000 185,200,000 190,500,000 190,200,000 175,500,000 175,300,000 174,300,000 175,800,000 162,400,000 161,800,000 151,200,000 166,700,000 143,500,000 139,300,000 118,100,000 83,000,000 119,200,000 73,500,000 48,600,000 64,700,000 82,900,000 86,000,000 187,300,000 149,000,000 162,200,000 173,900,000 192,400,000 158,200,000 180,200,000 179,700,000 192,600,000 143,743,000 160,979,000 153,240,000 
        contingent consideration
      		12,200,000 1,500,000 2,700,000 2,800,000 700,000 200,000 500,000 100,000 200,000 300,000 500,000 3,700,000 3,500,000 28,500,000 32,700,000 36,300,000                     
        right-of-use lease liabilities, current portion
      		5,300,000 5,300,000 4,500,000 4,100,000 4,000,000 3,900,000 4,000,000 4,000,000 4,000,000 4,300,000 4,400,000 4,800,000 4,900,000 4,900,000 4,700,000 4,500,000 4,700,000 4,500,000 4,100,000 4,200,000 4,300,000 4,300,000 4,300,000 4,300,000 4,100,000 3,900,000 4,100,000 3,900,000         
        term loan, current portion
      		5,200,000 5,200,000 5,200,000 3,900,000 4,200,000 4,200,000 4,200,000 4,200,000 4,200,000 4,200,000 4,200,000   5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,700,000 5,650,000 5,650,000 8,744,000 
        total current liabilities
      		288,700,000 287,000,000 264,700,000 260,100,000 241,300,000 246,500,000 233,100,000 247,400,000 230,100,000 231,500,000 225,500,000 230,200,000 222,200,000 303,200,000 257,200,000 246,100,000 190,100,000 168,900,000 171,600,000 125,700,000 115,600,000 121,000,000 171,200,000 202,600,000 229,300,000 204,800,000 209,400,000 252,900,000 268,600,000 199,100,000 217,300,000 227,100,000 223,300,000 193,584,000 203,075,000 220,483,000 
        noncurrent liabilities
      		                                    
        term loan, net of discount and deferred financing fees
      		498,600,000 499,800,000 501,600,000 502,700,000 398,500,000 398,600,000 398,600,000 398,700,000 398,700,000 398,800,000 398,900,000 414,200,000 413,900,000 507,600,000 508,700,000 509,800,000 510,900,000 512,000,000 513,100,000 514,200,000 515,300,000 516,400,000 517,500,000 518,600,000 519,700,000 520,800,000 522,000,000 523,100,000 524,200,000 525,400,000 526,500,000 547,400,000 548,500,000 549,023,000 550,135,000 691,889,000 
        deferred tax liabilities
      		17,600,000 16,200,000 12,600,000 5,400,000 4,900,000 5,700,000 5,700,000 5,500,000 3,100,000 2,400,000 2,600,000 2,800,000 1,800,000 2,000,000 1,700,000 1,400,000 1,500,000 2,300,000 3,800,000 1,900,000 1,900,000 2,400,000 4,000,000 2,100,000 60,000,000 75,300,000 79,500,000 70,700,000 75,400,000 105,400,000 100,400,000 100,700,000 100,200,000 163,224,000 151,046,000 154,227,000 
        other noncurrent liabilities
      		69,100,000 40,400,000 29,700,000 18,100,000 12,600,000 11,500,000 10,400,000 12,300,000 8,500,000 9,200,000 10,000,000 12,300,000 10,800,000 10,200,000 7,500,000 7,700,000 32,100,000 11,800,000 11,300,000 11,100,000 13,700,000 6,200,000 5,900,000 6,300,000 6,800,000 2,300,000 2,500,000 2,700,000 3,500,000 2,700,000 2,600,000 2,900,000 4,700,000 1,714,000 1,616,000 1,638,000 
        total liabilities
      		874,000,000 847,800,000 812,700,000 790,900,000 662,800,000 668,700,000 655,000,000 671,900,000 649,300,000 651,800,000 647,600,000 668,900,000 659,100,000 834,500,000 787,000,000 777,000,000 747,900,000 709,000,000 713,800,000 665,600,000 659,900,000 660,200,000 713,700,000 794,300,000 831,500,000 819,400,000 829,400,000 866,000,000 871,700,000 832,600,000 846,800,000 878,100,000 876,700,000 907,545,000 905,872,000 1,068,237,000 
        commitments and contingencies
      		                                    
        stockholders’ equity
      		                                    
        common stock, 0.01 par value...
      		2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 600,000 600,000 600,000 600,000 600,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 722,000 722,000 619,000 
        additional paid-in capital
      		1,016,400,000 1,017,700,000 1,018,100,000 1,024,900,000 1,034,000,000 1,044,300,000 1,049,700,000 550,000,000 559,200,000 568,100,000 577,000,000 585,500,000 610,300,000 619,700,000 634,000,000 645,200,000 653,200,000 661,800,000 1,088,800,000 1,090,000,000 1,088,300,000 1,082,900,000 950,500,000 697,900,000 701,100,000 698,400,000 696,700,000 693,100,000 689,700,000 687,100,000 684,800,000 680,900,000 677,100,000 671,316,000 670,570,000 511,068,000 
        accumulated other comprehensive income
      		1,200,000 400,000 5,500,000                                  
        accumulated deficit
      		-680,800,000 -650,600,000 -636,200,000 -634,800,000 -650,100,000 -655,200,000 -644,100,000 -641,300,000 -652,300,000 -634,400,000 -645,100,000 -637,000,000 -644,100,000 -666,500,000 -759,500,000 -750,700,000 -773,300,000 -766,000,000 -757,000,000 -710,500,000 -695,200,000 -637,200,000 -621,900,000 -631,800,000             
        total stockholders’ equity
      		338,800,000 369,500,000 389,400,000 392,100,000 385,900,000 391,100,000 407,600,000           -103,500,000 333,200,000 380,900,000 394,500,000                
        total liabilities and stockholders’ equity
      		1,212,800,000 1,217,300,000 1,202,100,000 1,183,000,000               1,047,000,000 1,046,500,000 1,054,400,000                
        trade and other receivables, net of allowances of 2.6 million and 1.6 million as of september 30, 2025 and december 31, 2024, respectively
      		 95,300,000                                   
        property and equipment
      		 2,000,000 1,700,000 1,700,000 1,800,000 1,700,000 1,500,000 1,600,000 1,500,000 1,700,000 1,900,000 2,000,000 2,200,000 4,000,000 4,200,000 4,400,000 3,700,000 3,800,000 3,800,000 3,900,000 3,900,000 4,100,000 4,400,000 4,500,000 4,200,000 3,800,000 3,600,000 3,600,000 3,700,000 3,800,000 3,900,000 3,900,000 3,800,000 3,471,000 3,626,000 3,720,000 
        right-of-use lease assets
      		 7,400,000 6,100,000 5,800,000 6,400,000 6,900,000 7,700,000 8,300,000 8,800,000 10,600,000 11,100,000 10,000,000 10,600,000 14,500,000 14,700,000 14,300,000 15,100,000 16,300,000 16,000,000 15,200,000 16,000,000 16,800,000 17,600,000 17,400,000 18,300,000 18,700,000 18,900,000 19,100,000         
        right-of-use lease liabilities, noncurrent portion
      		 4,400,000 4,100,000 4,600,000 5,500,000 6,400,000 7,200,000 8,000,000 8,900,000 9,900,000 10,600,000 9,400,000 10,400,000 11,500,000 11,900,000 12,000,000 13,300,000 14,000,000 14,000,000 12,700,000 13,400,000 14,200,000 15,100,000 14,700,000 15,700,000            
        trade and other receivables, net of allowances of 2.1 million and 1.6 million as of june 30, 2025 and december 31, 2024, respectively
      		  102,000,000                                  
        trade and other receivables, net of allowances of 1.9 million and 1.6 million as of march 31, 2025 and december 31, 2024, respectively
      		   121,700,000                                 
        trade and other receivables, net of allowances of 1.6 million and 1.4 million, as of december 31, 2024 and 2023, respectively
      		    82,500,000                                
        liabilities, redeemable convertible preferred stock and stockholders’ equity
      		                                    
        redeemable convertible preferred stock
      		                                    
        7% series a convertible participating preferred stock, 0.01 par value...
      		        497,100,000    472,400,000    433,900,000  700,000 700,000 700,000 700,000 500,000              
        total liabilities, redeemable convertible preferred stock and stockholders’ equity
      		    1,048,700,000 1,059,800,000 1,062,600,000           1,030,100,000                   
        trade and other receivables, net of allowances of 1.6 million and 1.4 million as of september 30, 2024 and december 31, 2023, respectively
      		     86,400,000                               
        7% series a redeemable convertible participating preferred stock, 0.01 par value...
      		       499,200,000  494,900,000 492,800,000 482,500,000  462,400,000 452,500,000 443,100,000  424,600,000                   
        trade and other receivables, net of allowances of 1.6 million and 1.4 million as of june 30, 2024 and december 31, 2023, respectively
      		      93,900,000                              
        trade and other receivables, net of allowances of 1.5 million and 1.4 million as of march 31, 2024 and december 31, 2023, respectively
      		       123,100,000                             
        liabilities, redeemable convertible preferred stock and stockholders’ deficit
      		                                    
        stockholders’ deficit
      		                                    
        total stockholders’ deficit
      		       -90,700,000 -92,500,000 -65,700,000 -67,500,000 -50,900,000 -33,100,000 -46,100,000 -124,800,000 -104,800,000 -119,400,000                    
        total liabilities, redeemable convertible preferred stock and stockholders’ deficit
      		       1,080,400,000 1,053,900,000 1,081,000,000 1,072,900,000 1,100,500,000 1,098,400,000 1,250,800,000 1,114,700,000 1,115,300,000 1,062,400,000                    
        trade and other receivables, net of allowances of 1.4 million and 1.5 million, as of december 31, 2023 and 2022, respectively
      		        85,200,000                            
        trade and other receivables, net of allowances of 1.6 million and 1.5 million as of september 30, 2023 and december 31, 2022, respectively
      		         78,600,000                           
        trade and other receivables, net of allowances of 1.5 million as of june 30, 2023 and december 31, 2022, respectively
      		          92,200,000                          
        trade and other receivables, net of allowances of 1.5 million as of march 31, 2023 and december 31, 2022
      		           104,800,000                         
        canceled event liabilities
      		           2,900,000 3,300,000                        
        trade and other receivables, net of allowances of 1.5 million and 1.2 million, as of december 31, 2022 and 2021, respectively
      		            74,900,000                        
        stockholders' deficit
      		                                    
        trade and other receivables, net of allowances of 1.5 million and 1.2 million as of september 30, 2022 and december 31, 2021, respectively
      		             82,800,000                       
        marketable securities
      		              50,000,000                      
        trade and other receivables, net of allowances of 1.4 million and 1.2 million as of june 30, 2022 and december 31, 2021, respectively
      		              79,700,000                      
        trade and other receivables, net of allowances of 1.3 million and 1.2 million as of march 31, 2022 and december 31, 2021, respectively
      		               86,200,000                     
        trade and other receivables, net of allowances of 1.2 million and 1.1 million, as of december 31, 2021 and 2020, respectively
      		                46,400,000                    
        insurance receivables
      		                   2,400,000 17,800,000 9,500,000 33,200,000              
        prepaid expenses
      		                12,500,000    8,500,000 11,500,000 8,800,000 6,500,000 24,000,000 12,700,000 13,100,000 10,500,000 19,800,000 13,400,000 13,200,000 11,800,000 19,900,000 11,364,000 14,011,000 14,097,000 
        trade and other receivables, net of allowances of 0.9 million and 1.1 million as of september 30, 2021 and december 31, 2020, respectively
      		                 38,900,000                   
        trade and other receivables, net of allowances of 0.9 million and 1.1 million as of june 30, 2021 and december 31, 2020, respectively
      		                  41,600,000                  
        trade and other receivables, net of allowances of 0.8 million and 1.1 million as of march 31, 2021 and december 31, 2020, respectively
      		                   42,300,000                 
        trade and other receivables, net of allowances of 1.1 million and 0.7 million, as of december 31, 2020 and 2019, respectively
      		                    30,700,000                
        revolving credit facility
      		                        10,000,000 6,000,000 5,000,000 25,000,000 40,000,000       15,000,000 
        trade and other receivables, net of allowances of 0.6 million and 0.7 million as of september 30, 2020 and december 31, 2019, respectively
      		                     40,400,000               
        liabilities and shareholders’ equity
      		                                    
        shareholders’ equity
      		                                    
        total shareholders’ equity
      		                     447,100,000 329,800,000 66,800,000 640,200,000 714,900,000 742,000,000 732,900,000 708,300,000 820,500,000 802,600,000 798,100,000 761,200,000 720,485,000 705,586,000 556,849,000 
        total liabilities and shareholders’ equity
      		                     1,107,300,000 1,043,500,000 861,100,000 1,471,700,000 1,534,300,000 1,571,400,000 1,598,900,000 1,580,000,000 1,653,100,000 1,649,400,000 1,676,200,000 1,637,900,000 1,628,030,000 1,611,458,000 1,625,086,000 
        trade and other receivables, net of allowances of 0.8 million and 0.7 million as of june 30, 2020 and december 31, 2019, respectively
      		                      51,900,000              
        trade and other receivables, net of allowance for doubtful accounts of 0.7 million as of march 31, 2020 and december 31, 2019
      		                       61,000,000             
        revolving credit facility, short-term
      		                                    
        revolving credit facility, long-term
      		                       50,000,000             
        preferred stock, 0.01 par value...
      		                                    
        trade and other receivables, net of allowance for doubtful accounts of 0.7 million and 0.9 million, as of december 31, 2019 and 2018, respectively
      		                        60,100,000            
        (accumulated deficit) retained earnings
      		                        -61,600,000            
        trade and other receivables, net of allowance for doubtful accounts of 1.3 million and 0.9 million as of september 30, 2019 and december 31, 2018, respectively
      		                         76,300,000           
        right-of-use lease liabilities
      		                         16,200,000 16,000,000 16,600,000         
        retained earnings
      		                         15,800,000 44,600,000 39,100,000 17,900,000 132,700,000 117,100,000 116,500,000 83,400,000 48,447,000 34,294,000 45,162,000 
        trade and other receivables, net of allowance for doubtful accounts of 1.1 million and 0.9 million as of june 30, 2019 and december 31, 2018, respectively
      		                          75,300,000          
        trade and other receivables, net of allowance for doubtful accounts of 1.0 million and 0.9 million as of march 31, 2019 and december 31, 2018, respectively
      		                           94,100,000         
        trade and other receivables, net of allowance for doubtful accounts of 0.9 and 0.8 million, as of december 31, 2018 and 2017, respectively
      		                            62,700,000        
        other intangible assets
      		                            435,300,000    545,000,000 529,751,000 540,298,000 544,914,000 
        trade and other receivables, net of allowance for doubtful accounts of 0.7 million and 0.8 million as of september 30, 2018 and december 31, 2017, respectively
      		                             85,900,000       
        trade and other receivables, net of allowance for doubtful accounts of 0.6 million and 0.8 million as of june 30, 2018 and december 31, 2017, respectively.
      		                              79,300,000      
        trade and other receivables, net of allowance for doubtful accounts of 0.8 as of march 31, 2018 and december 31, 2017
      		                               103,800,000     
        trade and other receivables, net of allowance for doubtful accounts of 0.8 and 0.7 as of december 31, 2017 and 2016, respectively
      		                                62,700,000    
        trade and other receivables, net of allowance for doubtful accounts of 589 and 693 as of september 30, 2017 and december 31, 2016, respectively
      		                                 96,228,000   
        trade and other receivables, net of allowance for doubtful accounts of 523 and 693 as of june 30, 2017 and december 31, 2016, respectively
      		                                  70,031,000  
        trade and other receivables, net of allowance for doubtful accounts of 736 and 693 as of march 31, 2017 and december 31, 2016, respectively
      		                                   84,845,000 
      Cashflow 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 2017-12-31 2017-09-30 2017-06-30 2017-03-31 
                                    
          operating activities
        		                            
          net income
        		  -1,400,000 15,300,000 5,100,000 -11,100,000 -2,800,000 11,000,000 -17,900,000 10,700,000 -8,100,000 7,100,000 22,400,000 93,000,000 -7,200,000 22,600,000      -15,300,000 -560,199,429.9 -570.1 40,060,000 19,207,000 -5,814,000 28,347,000 
          adjustments to reconcile net income to net cash provided by operating activities:
        		                            
          stock-based compensation
        		2,800,000 2,900,000 3,000,000 2,600,000 1,100,000 700,000 1,500,000 2,500,000 1,900,000 2,000,000 1,800,000 2,100,000                 
          allowance for credit losses
        		1,100,000 800,000 600,000 300,000 100,000 100,000 100,000 200,000 -100,000 200,000 100,000 100,000                 
          depreciation and amortization
        		8,300,000 8,700,000 7,600,000 6,400,000 7,100,000 7,100,000 7,000,000 7,100,000 9,800,000 8,800,000 12,900,000 13,500,000 16,500,000 14,700,000 14,000,000 14,300,000 11,500,000 12,200,000 12,100,000 11,800,000 11,400,000 12,200,000 24,999,987.2 12.8 10,950,000 10,848,000 10,827,000 10,575,000 
          intangible asset impairments
        		    1,000,000                17,400,000 0 59,399,940.6 59.4     
          loss on disposal of fixed assets and lease abandonment
        		                            
          non-cash operating lease expense
        		900,000 700,000 600,000 600,000 600,000 700,000 500,000 600,000 700,000 600,000 600,000 700,000 900,000 900,000 800,000 800,000 900,000 800,000 800,000 800,000 900,000 700,000 1,699,999.2 0.8     
          amortization of deferred financing fees and debt discount
        		200,000 200,000 300,000 700,000 1,000,000 1,100,000 1,100,000 1,100,000 1,100,000 1,000,000 500,000 400,000 700,000 400,000 300,000 300,000 400,000 300,000 400,000 400,000 400,000 400,000 699,999.6 0.4    912,000 
          loss on extinguishment of debt
        		        0 0                   
          deferred income taxes
        		2,100,000 400,000 2,500,000 -900,000 -800,000 100,000 100,000 2,400,000 700,000 -200,000 -200,000 1,000,000 -200,000 300,000 400,000 -200,000 -800,000 -1,500,000   -400,000 -1,700,000 -55,999,942.1 -57.9 -63,075,000 12,178,000 -3,181,000 14,178,000 
          remeasurement of contingent consideration
        		37,100,000 5,100,000 500,000 3,100,000 -500,000 0 -2,200,000 1,500,000 200,000 -1,900,000   -24,000,000 -3,500,000 -10,200,000 4,400,000 -600,000 1,100,000 1,100,000 400,000 900,000 200,000       
          changes in operating assets and liabilities, net of effect of businesses acquired:
        		                            
          trade and other receivables
        		-4,900,000 11,800,000 33,500,000 -34,700,000 4,300,000 7,900,000 28,500,000 -36,200,000 -6,400,000 13,300,000 12,600,000 -28,100,000 7,900,000 -3,200,000 10,200,000 -39,800,000 -7,300,000 2,600,000 700,000 -11,600,000 11,100,000 11,500,000 8,000,000.9 -0.9 38,180,000 -26,381,000 14,814,000 -27,313,000 
          insurance receivables
        		                0 0 2,400,000 15,400,000 -8,300,000 23,700,000       
          prepaid expenses and other assets
        		                            
          accounts payable and other liabilities
        		                            
          cancelled event liabilities
        		0 -100,000   -500,000   200,000 -100,000 -2,000,000    0 -1,900,000 -3,500,000 -11,800,000 13,100,000 -5,200,000 -12,200,000 1,000,000 -20,700,000 45,599,927.9 72.1     
          contingent consideration
        		0 0 0 -200,000 0 0 0 -200,000     0 0               
          income tax payable
        		3,300,000 -4,800,000 -5,900,000 7,000,000 6,400,000 -3,800,000 -6,800,000 1,700,000 27,100,000 -25,600,000 -5,300,000 1,100,000 -27,100,000 26,900,000 3,800,000 -2,200,000 -100,000 -400,000    -4,900,000 3,399,998 2     
          deferred revenues
        		-10,700,000 14,800,000 -19,300,000 -14,900,000 300,000 12,500,000 -400,000 -3,700,000 -1,500,000 13,500,000 500,000 7,000,000 -15,600,000 23,300,000 1,000,000 21,200,000 33,700,000 -36,200,000 45,100,000 24,900,000 -17,300,000 -18,300,000 -104,399,898.7 -101.3 35,215,000 -17,243,000 7,528,000 -20,100,000 
          operating lease liabilities
        		-1,100,000 -1,200,000 -900,000 -900,000 -800,000 -800,000 -800,000 -900,000 -1,000,000 -1,000,000 -1,000,000 -1,100,000 -1,100,000 -900,000 -1,100,000 -1,600,000 -200,000 -800,000 -200,000 -800,000 -900,000 -800,000 -1,499,999.2 -0.8     
          net cash from operating activities
        		12,300,000 1,800,000 15,900,000 12,600,000 20,600,000 9,100,000 9,800,000 7,300,000 15,600,000 8,500,000 7,300,000 8,900,000 -23,600,000 153,500,000 12,200,000 33,000,000 53,700,000 9,600,000 25,100,000 1,600,000 5,600,000 -20,100,000 -22,600,008.8 8.8 43,960,000 10,763,000 27,268,000 28,809,000 
          capital expenditures
        		-600,000 -300,000 -100,000 -200,000 -700,000 -100,000 -200,000 200,000 -100,000 0 -200,000 -300,000 -300,000 -400,000 -100,000 -1,000,000 -500,000 -400,000 -200,000 -400,000 0 -100,000 -799,999.5 -0.5 -570,000 -52,000 -117,000 -161,000 
          free cash flows
        		11,700,000 1,500,000 15,800,000 12,400,000 19,900,000 9,000,000 9,600,000 7,500,000 15,500,000 8,500,000 7,100,000 8,600,000 -23,900,000 153,100,000 12,100,000 32,000,000 53,200,000 9,200,000 24,900,000 1,200,000 5,600,000 -20,200,000 -23,400,008.3 8.3 43,390,000 10,711,000 27,151,000 28,648,000 
          investing activities
        		                            
          acquisition of businesses, net of cash acquired
        		-2,600,000 -50,800,000 -121,900,000 -19,600,000 0 -3,500,000 -1,100,000 -11,600,000 0 0 0 -9,500,000                 
          working capital adjustment received from seller
        		                            
          purchases of property and equipment
        		-600,000 -300,000 -100,000 -200,000 -700,000 -100,000 -200,000 -300,000 -100,000 0 -200,000 -300,000 -300,000 -400,000 -100,000 -1,000,000 -500,000 -400,000 -200,000 -400,000 0 -100,000 -799,999.5 -0.5 -570,000 -52,000 -117,000 -161,000 
          purchases of intangible assets
        		-1,600,000 -1,900,000 -2,000,000 -1,600,000 -1,500,000 -2,300,000 -2,500,000 -2,200,000 -2,000,000 -3,000,000 -2,500,000 -3,400,000 -2,500,000 -2,200,000 -1,600,000 -2,200,000 -2,000,000 -1,400,000 -1,100,000 -600,000 -900,000 -700,000 -1,499,999.4 -0.6 -1,709,000 -93,000 -174,000 -124,000 
          net cash from investing activities
        		-2,100,000 -53,000,000 -126,700,000 -21,400,000 -2,200,000 -5,900,000 -2,800,000 -14,100,000 -2,100,000 -3,000,000 -2,700,000 -13,200,000 -2,800,000 38,200,000 -80,100,000 -3,200,000 -120,800,000 -1,800,000 -8,300,000 -1,000,000 -34,200,000 -800,000 -2,299,998.9 -1.1 -39,299,000 -145,000 -16,638,000 -39,418,000 
          financing activities
        		                            
          payment of contingent consideration for acquisition of businesses
        		0 -2,800,000 0 -400,000     0 0   0 0 -100,000 -4,300,000             
          proceeds from second amended and restated term loan facility
        		0 0 0 275,400,000                         
          repayment of principal on previous extended term loan facility
        		                            
          repayment of principal on second amended and restated term loan facility
        		-1,300,000                            
          repayment of principal on amended and restated term loan facility
        		        0 0                   
          proceeds from previous extended term loan facility
        		                            
          original issuance discount
        		0 -700,000 0 -1,300,000     0 0                   
          fees paid for debt issuance
        		0 0 -400,000 -1,700,000     0 -400,000 -1,000,000 -600,000             -2,217,000 0   
          repurchase of common stock
        		-1,300,000 -500,000 -6,900,000 -8,800,000 -8,400,000 -3,600,000 0 -1,800,000 0 0 0 -16,900,000 -200,000 -5,900,000 -3,400,000 -900,000 -1,700,000 -5,600,000 -4,200,000 -900,000 -800,000 0 -99,999.9 -0.1     
          dividends on common stock
        		-2,900,000 -3,000,000 -3,000,000 -3,000,000 -3,000,000                        
          preferred stock cash dividend
        		    0 0 0 -8,600,000 -8,600,000                    
          proceeds from issuance of common stock under equity plans
        		100,000 200,000 100,000 100,000 0 200,000 400,000 900,000 100,000    0    0 0   0 100,000 99,999.9 0.1     
          net cash from financing activities
        		-5,400,000 -8,100,000 -10,200,000 90,800,000 -12,500,000 -7,500,000 -600,000 -10,600,000 -9,600,000 -9,900,000 -17,200,000 -17,500,000 -100,600,000 -7,300,000 -4,800,000 -6,600,000 -5,300,000 -7,000,000 -7,600,000 -2,300,000 -2,800,000 129,000,000 233,899,967.3 32.7 -7,740,000 -6,542,000 -16,535,000 11,517,000 
          effect of foreign exchange rates on cash and cash equivalents
        		700,000 -1,700,000                           
          net decrease in cash and cash equivalents
        		5,500,000 -61,000,000    -4,300,000 6,400,000 -17,400,000                     
          cash and cash equivalents
        		                            
          beginning of year
        		                           14,942,000 
          end of year
        		                           15,850,000 
          net loss
        		                -7,300,000 -9,000,000 -46,500,000 -15,300,000         
          adjustments to reconcile net loss to net cash provided by operating activities:
        		                            
          loss on lease abandonment
        		    0                        
          prepaid expenses and other current assets
        		 -15,300,000 4,900,000 11,300,000 1,100,000 -8,800,000 -2,600,000 6,100,000 900,000 -7,300,000 -2,700,000 7,200,000  -600,000 -7,000,000 1,100,000  5,000,000 4,400,000 -10,000,000         
          other noncurrent assets
        		 100,000 0 400,000   200,000 100,000 0 -500,000 0 100,000 0 0 -300,000 200,000 -200,000 -100,000 -300,000 700,000 -1,500,000   -1.5 -453,000 0 2,000 551,000 
          accounts payable and other current liabilities
        		 -7,800,000 -10,900,000 16,500,000 -5,400,000 -3,400,000 -13,100,000 14,000,000 400,000 -3,800,000 -4,600,000 -3,000,000 -8,100,000 -500,000 10,100,000 4,700,000 -2,400,000 19,400,000 5,400,000 -3,200,000 5,800,000 -7,400,000 7,299,989.4 10.6 -16,956,000 7,597,000 2,160,000 10,499,000 
          other noncurrent liabilities
        		 -100,000   1,600,000 -400,000 -300,000 -200,000 -1,100,000 700,000 -1,300,000 1,000,000 -300,000 1,200,000 -300,000 600,000 -1,800,000 700,000 -600,000 -2,800,000 -2,300,000 300,000   3,984,000 225,000 29,000 -738,000 
          escrow payment for business acquisition
        		 0                           
          repayment of principal on extended term loan facility
        		 0 0 -169,500,000 -1,100,000 -1,000,000 -1,000,000 -1,100,000 -1,100,000                    
          beginning of period
        		 0 0 194,800,000  0 0 204,200,000  0 0 239,100,000  0 0 231,200,000  0 0 295,300,000  0 9,599,990.4 9.6  0   
          end of period
        		 -61,000,000 -120,400,000 276,800,000  -4,300,000 6,400,000 186,800,000  -4,400,000 -12,600,000 217,300,000  184,400,000 -72,700,000 254,400,000  800,000 9,200,000 293,600,000  108,100,000 218,599,950 50  4,076,000   
          working capital adjustment receivable from seller
        		    0 0                       
          net increase in cash and cash equivalents
        		   82,000,000     3,900,000   -21,800,000 -127,000,000 184,400,000 -72,700,000 23,200,000 -72,400,000 800,000 9,200,000 -1,700,000 -31,400,000 108,100,000 208,999,959.6 40.4  4,076,000 -5,905,000 908,000 
          goodwill impairments
        		                    39,400,000 0 563,999,436 564     
          loss on disposal of fixed assets
        		        0 0 0 200,000                 
          purchase of marketable securities
        		            0 0               
          proceeds from maturity of marketable securities
        		            0                
          proceeds from extended term loan facility
        		        0 0                   
          supplemental disclosure of non-cash investing activities:
        		                            
          unpaid purchases of property and equipment and intangible assets
        		       500,000                     
          payment of deferred consideration for acquisition of businesses
        		                -2,200,000 0   -300,000 0 -499,999.5 -0.5     
          supplemental disclosure of non-cash financing activities:
        		                            
          amended and restated term loan facility
        		                            
          extended term loan facility
        		                            
          canceled event liabilities
        		           -400,000                 
          repayment of principal on term loan
        		            -100,000,000 -1,400,000 -1,400,000 -1,400,000 -1,500,000 -1,400,000 -1,400,000 -1,400,000 -1,500,000 -1,400,000 -2,799,998.6 -1.4 -1,402,000 -1,412,000 -159,200,000 -2,186,000 
          adjustments to reconcile net loss to net cash provided (used in) by operating activities:
        		                            
          prepaid expenses
        		                    1,600,000 -1,200,000 15,199,982.5 17.5 -7,805,000 3,348,000 -2,661,000 11,618,000 
          proceeds from borrowings on revolving credit facility
        		                    0 0 94,999,955 45 18,000,000 0 10,000,000 15,000,000 
          repayment of revolving credit facility
        		                    0 0 -104,999,995 -5 -18,000,000 0   
          cash dividends paid
        		                    0 0 -5,399,994.6 -5.4 -5,092,000 -5,054,000   
          proceeds from issuance of redeemable convertible preferred stock
        		                            
          payment of redeemable convertible preferred stock offering costs
        		                            
          supplemental disclosures of cash flow information
        		                            
          cash paid for income taxes
        		                            
          cash paid for interest
        		                            
          supplemental schedule of non-cash investing and financing activities
        		                            
          contingent consideration related to 2022 acquisitions
        		                            
          contingent consideration related to 2021 acquisitions
        		                            
          contingent consideration related to 2020 acquisitions
        		                            
          deferred payment related to 2020 acquisitions
        		                            
          contingent consideration related to 2019 acquisition
        		                            
          fair value of common stock issued related to 2020 acquisition
        		                            
          stock-based compensation expense
        		             1,300,000 1,600,000 2,100,000  2,400,000 2,800,000 3,000,000  1,500,000 2,699,998.4 1.6 594,000 784,000 602,000 620,000 
          provision for credit losses
        		             100,000 100,000 100,000  0 100,000 100,000 500,000 0       
          goodwill impairment
        		             0 0 6,300,000             
          intangible asset impairment
        		             0 0 1,600,000             
          loss on disposal of property and equipment
        		                            
          changes in operating assets and liabilities:
        		                            
          acquisition of businesses
        		             -9,200,000    0        0 -16,347,000 -39,133,000 
          fees paid for revolving credit facility extension
        		                 0           
          proceeds from issuance of common stock
        		                            
          adjustments to reconcile net income to net cash from operating activities:
        		                            
          adjustments to reconcile net loss to net cash from operating activities:
        		                            
          issuance of redeemable convertible preferred stock
        		                            
          supplemental schedule of non-cash financing activities
        		                            
          redeemable convertible preferred stock offering costs
        		                            
          proceeds from issuance of preferred stock
        		                    0 136,600,000       
          payment of preferred stock offering costs
        		                    -200,000 -6,300,000       
          preferred stock offering costs
        		                     -500,000       
          adjustments to reconcile net loss to net cash (used in) provided by operating activities:
        		                            
          provision for doubtful accounts
        		                       0.1 271,000 185,000 0 44,000 
          unrealized gain on interest rate swap and floor
        		                            
          intangible asset impairment charge
        		                            
          other
        		                        325,000 0 -22,000 -3,000 
          payment of contingent consideration
        		                        -4,341,000 0   
          proceeds from borrowings on term loan
        		                        -47,000 0   
          repayment of senior notes
        		                            
          payment of costs related to the initial public offering
        		                        34,000 -76,000   
          proceeds from exercise of stock options
        		                            
          contingent consideration related to 2017 acquisitions
        		                        -2,238,000 0   
          contingent consideration related to 2016 acquisitions
        		                            
          unrealized loss on interest rate swap and floor
        		                          -174,000 -381,000 
          proceeds from common stock issuance
        		                        5,325,000 0   
          contingent consideration related to 2015 acquisitions
        		                            
          amortization and write-off of deferred financing fees and debt discount
        		                         372,000   
          payment of purchase price payable
        		                           -1,297,000 
          contingent consideration related to 2017 acquisition
        		                           3,838,000