7Baggers

North American Construction Group Ltd
(NYSE:NOA) 

NOA stock logo

North American Construction Group Ltd. provides mining and heavy construction services to the resource development and industrial construction sectors in Canada and the United States The company's Heavy Construction & Mining division offers constructability reviews, budgetary cost estimates, design-...

Founded: 1953
Full Time Employees: 165
Sector: Energy
Industry: Oil & Gas Equipment & Services

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    Unit: USD2025-09-30 2025-06-30 2025-03-31 2025-03-21 2024-09-30 2024-06-30 2024-03-31 2024-03-13 2023-12-14 2023-09-30 2023-06-30 2023-03-31 2022-09-30 2022-06-30 2022-03-31 2022-02-15 2021-10-27 2021-09-30 2021-06-30 2021-03-31 2020-09-30 2020-06-30 2020-03-31 2019-09-30 2019-06-30 2019-03-31 2018-06-30 2018-05-01 2015-03-31 2013-11-05 2013-09-30 2013-08-01 2013-06-10 2012-02-02 2010-09-30 2010-08-04 2010-03-31 2009-12-31 2009-11-03 2009-08-04 2009-06-09 2008-11-06 2008-08-13 2008-06-23 2008-02-14 2007-11-14 2007-06-30 2007-06-20 2007-03-31 
                                                     
      revenue
    317,248,000 320,634,000 340,833,000 305,590,000 286,857,000 276,314,000 297,026,000 326,298,000  194,744,000 193,573,000 242,605,000 191,383,000 168,028,000 176,711,000 233,417,000 165,962,000 165,962,000 140,155,000 168,408,000 94,015,000 70,771,000 198,817,000 166,269,000 176,935,000 186,408,000 79,471,000 114,703,000 85,076,000 7,173,000 116,243,000 42,824,000 43,988,000 284,630,000 234,858,000 183,594,000 758,965,000 222,714,000 171,110,000 147,103,000 972,536,000 280,283 258,987,000 989,696 274,894,000 223,575,000 167,627,000 629,446,000  
      yoy
    10.59% 16.04% 14.75% -6.35%  41.89% 53.44% 34.50%  15.90% 9.54% 3.94% 15.32% 1.24% 26.08% 38.60% 76.53% 134.51% -29.51% 1.29% -46.86% -62.03% 150.18% 44.96% 107.97% 2498.75% -31.63% 167.85% 93.41% -97.48% -50.50% -76.67% -94.20% 27.80% 37.26% 24.81% -21.96% 79360.40% -33.93% 14763.45% 253.79% -99.87% 54.50% -99.84%      
      qoq
    -1.06% -5.93% 11.53% 6.53% 3.82% -6.97% -8.97%   0.60% -20.21% 26.76% 13.90% -4.91% -24.29% 40.64% 0.00% 18.41% -16.78% 79.13% 32.84% -64.40% 19.58% -6.03% -5.08% 134.56% -30.72% 34.82% 1086.06% -93.83% 171.44% -2.65% -84.55% 21.19% 27.92% -75.81% 240.78% 30.16% 16.32% -84.87% 346883.58% -99.89% 26068.34% -99.64% 22.95% 33.38% -73.37%   
      cost of sales
    218,033,000 230,293,000 242,228,000 218,834,000 183,405,000 187,022,000 199,795,000 218,853,000  139,840,000 147,690,000 165,301,000 140,440,000   154,967,000                                  
      depreciation
    49,492,000 54,511,000 60,714,000 44,765,000 38,354,000 39,623,000 43,941,000 41,990,000  28,592,000 24,352,000 36,385,000 26,376,000 26,340,000 30,692,000 35,860,000 21,426,000 21,426,000 26,425,000 31,198,000 18,876,000 11,551,000 32,308,000 21,875,000 22,099,000 29,281,000 11,037,000 18,192,000 11,538,000  7,993,000  706,000 10,319,000 8,054,000 8,203,000 42,636,000 11,173,000 11,987,000 9,347,000 38,102,000 10,668 8,158,000 36,729 7,885,000 7,318,000 8,976,000 31,034,000  
      gross profit
    49,723,000 35,830,000 37,891,000 41,991,000 65,098,000 49,669,000 53,290,000 65,455,000  26,312,000 21,531,000 40,919,000 24,567,000 12,440,000 21,951,000 42,590,000 21,711,000 21,711,000 15,226,000 32,063,000 15,364,000 21,097,000 34,651,000 18,286,000 23,466,000 29,583,000 9,651,000 26,791,000 10,997,000 -202,000 11,631,000 4,565,000 11,828,000 20,040,000 29,097,000 15,620,000 139,285,000 47,420,000 33,121,000 24,810,000 175,305,000 44,281 47,589,000 163,317 50,630,000 35,210,000 14,904,000 92,436,000  
      yoy
    -23.62% -27.86% -28.90% -35.85%  88.77% 147.50% 59.96%  111.51% -1.91% -3.92% 13.15% -42.70% 44.17% 32.83% 41.31% 2.91% -56.06% 75.34% -34.53% -28.69% 259.04% -31.75% 113.39% -14745.05% -17.02% 486.88% -7.03% -101.01% -60.03% -70.77% -91.51% -57.74% -12.15% -37.04% -20.55% 106988.82% -30.40% 15091.32% 246.25% -99.87% 219.30% -99.82%      
      qoq
    38.77% -5.44% -9.76% -35.50% 31.06% -6.79% -18.59%   22.21% -47.38% 66.56% 97.48% -43.33% -48.46% 96.17% 0.00% 42.59% -52.51% 108.69% -27.17% -39.12% 89.49% -22.07% -20.68% 206.53% -63.98% 143.62% -5544.06% -101.74% 154.79% -61.41% -40.98% -31.13% 86.28% -88.79% 193.73% 43.17% 33.50% -85.85% 395792.14% -99.91% 29039.04% -99.68% 43.79% 136.25% -83.88%   
      gross margin %
    15.67% 11.17% 11.12% 13.74% 22.69% 17.98% 17.94% 20.06% NaN% 13.51% 11.12% 16.87% 12.84% 7.40% 12.42% 18.25% 13.08% 13.08% 10.86% 19.04% 16.34% 29.81% 17.43% 11.00% 13.26% 15.87% 12.14% 23.36% 12.93% -2.82% 10.01% 10.66% 26.89% 7.04% 12.39% 8.51% 18.35% 21.29% 19.36% 16.87% 18.03% 15.80% 18.38% 16.50% 18.42% 15.75% 8.89% 14.69%  
      general and administrative expenses
    12,870,000 12,662,000 7,682,000 13,696,000 10,945,000 10,932,000 14,753,000 18,702,000  12,485,000 11,974,000 14,179,000 7,013,000 5,052,000 6,232,000 6,648,000 7,074,000 7,074,000 13,675,000 9,396,000 5,380,000 5,680,000 1,807,000 7,623,000 5,120,000 14,798,000 8,207,000 5,903,000 8,411,000 632,000 9,183,000 2,879,000 3,530,000 15,136,000                
      amortization of intangible assets
    366,000 489,000 601,000                  234,000 88,000 198,000 134,000 293,000 208,000 88,000  473,000  865,000   1,174,000 672,000 588,000 1,719,000 277,000 236,000 248,000 1,087,000 276 278,000 1,071 443,000 182,000 70,000 582,000  
      loss on disposal of property, plant and equipment
    740,000 -110,000     261,000     1,213,000         -194,000 672,000 157,000   21,000         585,000  1,233,000 743,000 260,000           
      operating income
    35,747,000 22,789,000 30,582,000 22,544,000 53,805,000 38,705,000 38,276,000 45,779,000  14,138,000 10,270,000 25,527,000 17,649,000 6,301,000 15,642,000 31,565,000 14,373,000 14,373,000 1,614,000 22,925,000 9,944,000 14,657,000      17,067,000  96,509,000  1,686,000 7,930,000                 
      yoy
    -33.56% -41.12% -20.10% -50.75%  173.77% 272.70% 79.34%  124.38% -34.34% -19.13% 22.79% -56.16% 869.14% 37.69% 44.54% -1.94%          912.28%                      
      qoq
    56.86% -25.48% 35.65% -58.10% 39.01% 1.12% -16.39%   37.66% -59.77% 44.64% 180.10% -59.72% -50.45% 119.61% 0.00% 790.52% -92.96% 130.54% -32.16%           -78.74%                  
      operating margin %
    11.27% 7.11% 8.97% 7.38% 18.76% 14.01% 12.89% 14.03% NaN% 7.26% 5.31% 10.52% 9.22% 3.75% 8.85% 13.52% 8.66% 8.66% 1.15% 13.61% 10.58% 20.71% 0% 0% 0% 0% 0% 14.88% 0% 1345.45% 0% 3.94% 18.03% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%  
      interest expense
    15,265,000 14,123,000 13,516,000 14,401,000 15,003,000 14,339,000 15,597,000 14,007,000  8,119,000 7,511,000 7,311,000 6,522,000 5,565,000 4,682,000 7,774,000 4,845,000 4,845,000 4,398,000 4,542,000 4,438,000 4,274,000 5,528,000 5,541,000 5,123,000 5,461,000 1,622,000 1,819,000 2,630,000 998,000 6,908,000 1,830,000 1,931,000 7,599,000 7,708,000 7,729,000 26,080,000 9,652,000 8,980,000 8,637,000 27,450,000 6,440 6,449,000 27,019 7,399,000 6,196,000 6,809,000 37,249,000  
      equity earnings in affiliates and joint ventures
    -5,232,000    -4,428,000 -6,629,000    -4,483,000 -9,408,000 -9,523,000 -14,076,000 -8,335,000 -6,241,000   -6,833,000 -4,733,000 -3,469,000 -4,620,000 -1,474,000                            
      loss on derivative financial instruments
    1,684,000 750,000 6,912,000                                               
      change in fair value of contingent obligations
    505,000 -13,238,000 3,030,000  21,989,000 11,563,000 5,393,000                                           
      income before income taxes
    23,525,000 16,021,000 10,407,000  20,669,000 19,159,000 15,774,000   13,120,000 14,019,000 30,248,000 25,203,000 9,071,000 17,201,000  16,361,000 16,361,000 2,202,000 24,336,000 10,789,000 14,291,000 25,029,000 5,740,000 13,887,000 9,735,000 41,000   95,511,000  -144,000 5,999,000 -2,533,000 5,865,000 -12,322,000 41,898,000 28,547,000 1,380,000 18,771,000 -124,792,000 755 24,405,000 57,163 33,092,000 4,040,000 -13,928,000 18,486,000  
      current income tax expense
    206,000 798,000 1,777,000  2,238,000  4,234,000   1,495,000 567,000 1,136,000 701,000 335,000 162,000  572,000 572,000   470,000  17,000 13,000                          
      deferred income tax expense
    6,023,000 4,973,000 2,467,000  4,530,000 6,621,000 171,000   238,000 1,190,000 7,266,000 4,282,000  3,482,000  1,816,000 1,816,000  4,950,000 3,489,000 992,000 5,977,000   2,475,000 8,000   12,780,000                    
      net income
    17,296,000 10,250,000 6,163,000 4,808,000 13,901,000 14,007,000 11,369,000 17,646,000  11,387,000 12,262,000 21,846,000 20,220,000 7,514,000 13,557,000 26,081,000 13,973,000 13,973,000          11,131,000  82,731,000 74,056,000   -1,890,000              21,079,000  
      yoy
    24.42% -26.82% -45.79% -72.75%  23.01% -7.28% -19.23%  51.54% -9.55% -16.24% 44.71% -46.22%                -4477.30%                    
      qoq
    68.74% 66.32% 28.18% -65.41% -0.76% 23.20% -35.57%   -7.14% -43.87% 8.04% 169.10% -44.57% -48.02% 86.65% 0.00%             11.71%                    
      net income margin %
    5.45% 3.20% 1.81% 1.57% 4.85% 5.07% 3.83% 5.41% NaN% 5.85% 6.33% 9.00% 10.57% 4.47% 7.67% 11.17% 8.42% 8.42% 0% 0% 0% 0% 0% 0% 0% 0% 0% 9.70% 0% 1153.37% 63.71% 0% 0% -0.66% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 3.35%  
      other comprehensive income
                                                     
      unrealized foreign currency translation gain
    -11,153,000      693,000   1,100,000 417,000  382,000 25,000                    -32,000                
      comprehensive income
    28,449,000 9,691,000 6,641,000  15,016,000 15,338,000 10,676,000   10,287,000 11,845,000 21,901,000 20,602,000 7,539,000 13,548,000  13,967,000 13,967,000             74,026,000   -1,922,000                
      per share information
                                                     
      basic net income per share
    0.59 0.35 0.22 0.18 0.52 0.52 0.43 0.66  0.43 0.46 0.83 0.75 0.27 0.48 0.99 0.49 0.49 0.1 0.68 0.23 0.46 0.74 0.29    0.44  2.28                    
      diluted net income per share
    0.56 0.33 0.21 0.19 0.47 0.47 0.39 0.58  0.39 0.42 0.71 0.65 0.25 0.43 0.84 0.44 0.44 0.09 0.62 0.22 0.42 0.67 0.26    0.36  2.26                    
      equity loss (earnings) in affiliates and joint ventures
     5,133,000     1,512,000                                           
      unrealized foreign currency translation loss
     559,000               6,000 6,000                                
      (gain) loss on disposal of property, plant and equipment
      -974,000       -311,000 -713,000  -95,000      -63,000 -258,000                -4,000              
      equity (earnings) loss in affiliates and joint ventures
      -3,283,000                                               
      unrealized foreign currency translation (gain) loss
      -478,000  -1,115,000 -1,331,000      -55,000                                      
      gross profit margin
       13,700    20,100        18,200            23,400                      
      stock-based compensation benefit
       5,625,000                                              
      adjusted ebitda
       103,714,000    101,136,000        85,875,000            39,090,000                      
      adjusted ebitda margin
       27,800    25,100        26,800            34,100                      
      adjusted eps
          0.87        1.1                                  
      gain on disposal of property, plant and equipment
        348,000 32,000        1,087,000 77,000  264,000 264,000               63,000                 
      gain on derivative financial instruments
        572,000 273,000                                            
      current income tax (benefit) expense
         -1,469,000                                            
      stock-based compensation (benefit) expense
           -496,000                                          
      net realized and unrealized gain on derivative financial instruments
             -2,618,000 -1,852,000                                       
      net unrealized gain on derivative financial instruments
               -2,509,000                                      
      project costs
                 74,632,000 62,115,000  63,301,000 63,301,000 41,460,000 50,162,000 27,585,000 12,331,000 60,117,000 67,126,000 73,938,000 70,491,000 31,793,000 41,463,000 31,947,000 7,291,000 44,715,000 37,680,000 30,875,000 188,463,000 132,440,000 77,277,000 301,307,000 90,322,000 65,959,000 54,553,000 505,026,000 154,961 148,631,000 592,458 167,323,000 135,266,000 94,673,000 363,930,000  
      equipment costs
                 54,616,000 61,953,000  59,524,000 59,524,000 57,044,000 54,985,000 32,190,000 25,792,000 71,741,000 58,982,000 57,432,000 57,053,000 26,990,000 28,257,000 30,594,000  46,080,000   49,607,000 46,358,000 65,003,000 209,408,000 57,512,000 44,359,000 46,044,000 210,520,000 60,787 45,811,000 174,873 44,231,000 42,212,000 45,139,000 122,306,000  
      deferred income tax (benefit) expense
                 1,222,000     -540,000             -47,000                  
      stock-based compensation expense
                   4,910,000            1,898,000                      
      (i)see “non-gaap financial measures”. (ii)adjusted ebitda margin is calculated using adjusted ebitda over total combined revenue. (iii)see “accounting estimates, pronouncements and measures”. reconciliation of total reported revenue to total combined revenue
                                                     
      revenue from wholly-owned entities per financial statements
                   233,417                                  
      share of revenue from investments in affiliates and joint ventures
                   183,006                                  
      elimination of joint venture subcontract revenue
                   -96,315                                  
      total combined revenue
                   320,108                                  
      (i)see “non-gaap financial measures”. reconciliation of reported gross profit to combined gross profit
                                                     
      gross profit from wholly-owned entities per financial statements
                   42,590                                  
      share of gross profit from investments in affiliates and joint ventures
                   14,541                                  
      combined gross profit
                   57,131                                  
      net realized gain on derivative financial instrument
                                                     
      other comprehensive loss
                                                     
      net realized and unrealized gain on derivative financial instrument
                      -253,000  -551,000                             
      net income and comprehensive income
                      2,742,000 19,386,000 6,830,000 13,299,000 19,035,000 7,606,000 14,008,000 7,260,000 33,000                       
      net realized and unrealized (gain) loss on derivative financial instruments
                       -2,484,000                              
      foreign exchange loss
                        -112,000 62,000   23,000  33,000       134,000     -17,862,000           
      net income attributable to noncontrolling interest
                                                     
      net income and comprehensive income available to shareholders
                        6,830,000 13,299,000 19,035,000 7,561,000 13,894,000 7,181,000                        
      unrealized gain on derivative financial instrument
                         -2,496,000                            
      operating income before the undernoted
                          32,489,000 10,344,000 18,572,000 14,533,000 1,696,000  2,189,000  563,000   2,808,000 12,305,000 1,064,000 73,474,000 30,904,000 18,569,000 9,772,000 -81,712,000 23,046 26,930,000 92,397 33,173,000 17,092,000 -378,000 51,126,000  
      foreign exchange gain
                          182,000            49,000 -1,697,000    -19,215,000 46,666,000  -1,641,000 -25,442   -17,100,000 -5,044,000  
      unrealized loss on derivative financial instrument
                          2,210,000                           
      loss on sublease
                               1,732,000                      
      gain on disposal of assets held for sale
                           185,000  23,000                        
      foreign exchange (gain) loss
                                        -48,901,000 -5,403,000       -1,784,000 -14,252,000    
      net income attributable to non-controlling interest
                                                     
      deferred income tax
                                                     
      net income - basic
                            0.55 0.29  0.44   2.28                   
      net income - diluted
                            0.45 0.25  0.36   2.26                   
      select financial information:
                                                     
      net income margin
                               9,700                      
      ebit
                               17,077,000                      
      ebit margin
                               14,900                      
      ebitda
                               35,422,000                      
      consolidated ebitda
                               37,912,000                      
      consolidated ebitda margin
                               33,100                      
      cash dividend declared per share
                               0.02                      
      net income available to common shareholders
                               11,131                      
      interest from convertible debentures
                               441                      
      diluted net income available to common shareholders
                               11,572                      
      weighted-average number of common shares
                               25,284,661                      
      weighted-average of dilutive securities
                                                     
      dilutive effect of treasury shares
                               2,651,684                      
      dilutive effect of stock options
                               268,901                      
      dilutive effect of convertible debentures
                               3,686,636                      
      weighted-average number of diluted common shares
                               31,891,882                      
      loss on disposal of plant and equipment
                                13,000           41,000 5,325,000 1,612 1,144,000  5,000 576,000 269,000   
      income tax expense
                                                     
      current
                                2,118,000  284,000   168,000 3,259,000 1,228,000              
      deferred
                                     -811,000 237,000 -3,241,000              
      net income - basic & diluted
                                -0.01                     
      cash dividends per share
                                0.02                     
      equipment operating lease expense
                                 84,000 5,824,000 579,000  16,201,000 18,909,000 17,491,000 66,329,000 16,287,000 15,684,000 12,349,000 43,583,000 9,586 8,798,000 22,319 4,825,000 3,569,000 3,935,000 19,740,000  
      gain on disposal of piling assets and liabilities
                                 -97,343,000                    
      loss on disposal of property plant and equipment
                                     273,000                
      loss on disposal of assets held for sale
                                  1,195,000   40,000   373,000 649,000 41,000           
      equity in earnings of unconsolidated joint venture
                                        -44,000             
      unrealized gain on derivative financial instruments
                                                     
      loss on debt extinguishment
                                  6,476,000     4,346,000              
      income tax expense:
                                                     
      net income from continuing operations
                                                     
      income from discontinued operations, net of tax
                                  82,731,000                   
      per share information from continuing operations
                                                     
      net loss - basic
                                  -0.24                   
      net loss - diluted
                                  -0.24                   
      per share information from discontinued operations
                                                     
      net income from discontinued operations
                                   -97,000 4,559,000                 
      operating lease expense
                                    579,000                 
      amortization of intangibles
                                    351,000                 
      recovery of previously expensed tools, supplies and equipment parts
                                                     
      gain on sale of inventory
                                    -46,000                 
      deferred income tax benefit
                                    1,440,000                 
      equity in loss of unconsolidated joint venture
                                     609,000 274,000               
      realized and unrealized gain on derivative financial instruments
                                     -2,392,000   54,411,000   1,046,000    34,075      
      net income per share
                                     -0.05 0.07 -0.29 0.78 0.58 0.02 0.41 -3.87 -0.03 0.53 1.11 0.71 0.06 -0.29 0.87  
      general and administrative costs
                                      15,286,000 13,729,000 62,530,000 14,847,000 14,015,000 15,066,000 74,405,000 19,345 19,215,000 69,670 17,009,000 17,360,000 14,627,000 39,769,000  
      (gain) loss on disposal of assets held for sale
                                      -25,000     -317,000          
      realized and unrealized (gain) loss on derivative financial instruments
                                      -1,308,000   -2,363,000   -25,081,000    -5,419,000   -196,000  
      other income
                                      -9,000  -14,000   533,000 -5,955,000 -3 -18,000 -418 -115,000 -128,000 -108,000 -904,000  
      income taxes
                                                     
      net income and comprehensive income for the period
                                      2,369,000 -10,309,000  20,797,000 809,000 14,774,000  -1,222 19,096,000  25,377,000 2,068,000 -10,323,000   
      equity in loss (earnings) of unconsolidated joint venture
                                       243,000              
      realized and unrealized loss on derivative financial instruments
                                       3,008,000   26,271,000   7,618    21,236,000 23,949,000   
      impairment of goodwill
                                            176,200,000         
      income taxes:
                                                     
      current income taxes
                                        3,803,000 591,000 1,264,000  5,546,000 62  80 8,000  21,000 -2,975,000  
      deferred income taxes
                                        9,876,000             
      net income and comprehensive income for the year
                                        28,219,000    -139,515,000   39,784      
      other incomes
                                         471,000            
      future income taxes
                                         7,159,000 -693,000 3,997,000 9,177,000 1,915 5,309,000 17,299 7,707,000 1,972,000 -3,626,000 382,000  
      (deficit), beginning of period — as previously reported
                                         -142,228,000            
      change in accounting policy related to inventories
                                            991,000         
      deficit, end of period
                                         -121,431,000 -142,228,000  -157,811,000 -422   -40,180,000 -65,557,000 -67,625,000   
      other expenses
                                          -200,000           
      (deficit) retained earnings, beginning of period — as previously reported
                                          -143,037,000           
      deficit, beginning of period – as previously reported
                                           -157,811,000 -19,287,000  -19,287,000  -65,557,000 -67,625,000 -55,526,000   
      (deficit) retained earnings , end of period
                                           -143,037,000          
      gain on repurchase of nacg preferred corp. series a preferred shares
                                                   -9,400,000  
      loss on extinguishment of debt
                                                   10,935,000  
      change in accounting policy related to financial instruments
                                               -3,545   1,776,000   
      premium on repurchase of common shares
                                                   -59,000  
      loss on disposal of asset held for sale
                                             22,000    316,000   
      foreign exchange loss/
                                             8,236        
      retained earnings (deficit), beginning of period — as previously reported
                                             800        
      realized and unrealized (gain)/loss on derivative financial instruments
                                              -2,265,000       
      change in account policy related to inventories
                                              991,000       
      retained earnings (deficit), end of period
                                              800,000       
      gain on disposal of plant and equipment
                                               179      
      deficit, beginning of year – as previously stated
                                               -55,526      
      deficit, end of year
                                               -19,287    -55,526,000  
      financing costs
                                                     
      gain on disposal of equipment
                                                   959,000  
      deficit, beginning of year
                                                   -76,546,000  
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-09-30 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 2018-06-30 2015-03-31 2013-09-30 2012-02-02 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-11-03 2009-09-30 2009-06-30 2009-06-09 2008-12-31 2008-09-30 2008-06-30 2008-06-23 2007-12-31 2007-09-30 2007-06-30 2007-06-20 2007-03-31 
                                                      
        assets
                                                      
        current assets
                                                      
        cash
      101,637,000 79,025,000 78,241,000 77,875,000,000 77,670,000 68,343,000 80,095,000 88,614,000,000 40,441,000 21,749,000 15,659,000 69,144,000,000 23,187,000 11,717,000 20,122,000 16,601,000,000 15,021,000 16,791,000 31,733,000 43,915,000,000 40,331,000 41,329,000 38,633,000 5,544,000 12,162,000 17,433,000 20,415,000 2,836,000 25,665,000                    
        accounts receivable
      175,933,000 195,313,000 186,850,000 166,070,000,000 158,179,000 142,451,000 138,451,000 97,855,000,000 78,570,000 78,916,000 92,305,000 83,811,000,000 87,192,000 67,160,000 57,705,000 68,787,000,000 66,427,000 48,823,000 65,266,000 36,373,000,000 43,279,000 26,585,000 57,677,000 66,746,000 90,602,000 71,150,000 71,373,000 53,142,000 50,115,000 79,968,000 145,706,000 101,525,000 89,925,000 111,884,000 91,716,000 87,893,000 87,893,000 70,247,000 78,323,000 143,248,000 138,644,000 127,554,000 166,002 115,512,000 124,048,000 110,562,000 93,220,000 93,220,000 
        contract assets
      12,168,000 15,670,000 19,676,000 4,135,000,000 16,128,000 12,886,000 15,874,000 35,027,000,000 13,482,000 10,688,000 9,739,000 15,802,000,000 10,938,000 9,906,000 10,702,000 9,759,000,000 10,512,000 5,454,000 5,609,000 7,034,000,000 5,365,000 1,611,000 1,075,000 19,193,000 19,485,000 36,075,000 29,507,000 8,848,000                     
        inventories
      74,229,000 74,217,000 74,242,000 74,081,000,000 77,150,000 69,388,000 68,876,000 64,962,000,000 57,086,000 56,169,000 53,264,000 49,898,000,000 44,142,000 47,402,000 54,029,000 44,544,000,000 49,352,000 27,999,000 21,735,000 19,174,000,000 20,068,000 21,810,000 23,822,000 21,649,000 26,990,000 20,073,000 15,220,000 6,201,000 6,430,000 6,424,000 20,830,000 4,906,000 10,385,000 5,659,000 8,088,000 10,079,000 10,079,000 7,717,000 11,814,000          
        prepaid expenses and deposits
      8,674,000 5,540,000 6,523,000 7,676,000,000 8,477,000 7,942,000 7,946,000 7,402,000,000 7,582,000 9,526,000 9,535,000 10,587,000,000 11,150,000 4,461,000 4,619,000 6,828,000,000 6,542,000 4,445,000 3,942,000 4,999,000,000 5,274,000 2,829,000 4,043,000 4,245,000 5,520,000 3,377,000 3,724,000 2,882,000 1,744,000 2,699,000 9,119,000 10,511,000 10,744,000 6,881,000 7,982,000 7,453,000 7,453,000 8,799,000 4,781,000 6,817,000 8,387,000 8,594,000 9,300 6,975,000 7,187,000 8,248,000 11,932,000 11,932,000 
        assets held for sale
      112,000 683,000 782,000  7,355,000 10,707,000 1,257,000  501,000 869,000 373,000  384,000 43,000 294,000  723,000 4,119,000 5,006,000  4,583,000 4,273,000 4,867,000    1,196,000 4,066,000 357,000 229,000  2,233,000 838,000 838,000 1,038,000 2,857,000 2,857,000 2,117,000 2,760,000 1,206,000 856,000 860,000 1,074      
        property, plant and equipment, net of accumulated depreciation
      1,386,512,000 1,350,451,000 1,314,635,000  1,235,447,000 1,204,091,000 1,165,183,000  695,176,000 683,822,000 663,476,000  645,454,000 641,580,000 643,561,000  646,256,000 641,410,000 644,220,000  633,942,000 629,230,000 617,034,000  597,821,000 586,289,000 566,956,000                      
        operating lease right-of-use assets
      11,051,000 11,181,000 11,539,000  13,404,000 13,962,000 14,402,000  13,151,000 13,542,000 14,289,000  15,540,000 16,437,000 13,819,000  15,820,000 16,057,000 17,055,000  19,207,000 20,211,000 21,056,000  14,094,000 14,871,000 15,172,000                      
        investments in affiliates and joint ventures
      85,365,000 79,181,000 86,341,000  85,192,000 81,206,000 74,498,000  85,713,000 82,981,000 76,703,000  69,363,000 59,761,000 60,478,000  52,936,000 43,087,000 38,859,000  50,687,000 47,017,000 45,586,000  9,736,000 8,557,000 9,385,000                      
        intangible assets
      10,657,000 10,159,000 10,072,000  10,052,000 8,066,000 7,614,000  5,881,000 6,199,000 6,593,000                     8,433,000 7,652,000 7,669,000 1,980,000 2,319,000 2,319,000 1,938,000 1,041,000          
        other assets
      5,509,000 5,795,000 5,581,000  5,082,000 5,666,000 6,015,000  11,198,000 6,779,000 8,079,000  2,602,000 4,726,000 8,019,000  7,355,000 8,973,000 7,515,000  7,737,000 8,465,000 5,837,000  8,095,000 7,643,000 8,227,000 5,355,000 9,183,000 10,741,000 21,045,000            3,703 3,376,000 5,468,000 6,330,000 10,164,000 10,164,000 
        total assets
      1,871,847,000 1,827,215,000 1,794,482,000 1,694,264,000,000 1,694,136,000 1,624,708,000 1,580,211,000 1,546,478,000,000 1,009,065,000 971,317,000 950,015,000 979,513,000,000 917,369,000 870,183,000 879,520,000 869,278,000,000 874,932,000 817,158,000 841,547,000 838,928,000,000 844,078,000 816,477,000 836,749,000 792,652,000 795,168,000 774,889,000 752,479,000 399,050,000 407,662,000 487,620,000 759,761,000   702,617,000               
        liabilities and shareholders’ equity
                                                      
        current liabilities
                                                      
        accounts payable
      122,699,000 143,044,000 138,700,000 -110,750,000,000 123,110,000 119,742,000 124,017,000 -146,190,000,000 76,173,000 80,946,000 81,377,000 -102,549,000,000 85,116,000 73,645,000 65,065,000 -76,251,000,000 70,787,000 46,523,000 49,379,000 -41,369,000,000 34,787,000 35,502,000 56,014,000  64,395,000 89,089,000 79,772,000 48,579,000 26,433,000 54,554,000 143,343,000 106,231,000 71,847,000 66,876,000 78,097,000 70,167,000 70,167,000 50,375,000 56,204,000 93,321,000 95,811,000 148,578,000 113,143 102,994,000 130,057,000 81,320,000 94,548,000 94,548,000 
        accrued liabilities
      77,434,000 60,966,000 59,454,000 -77,908,000,000 47,724,000 57,100,000 61,502,000 -94,726,000,000 41,017,000 23,234,000 30,954,000 -43,784,000,000 23,440,000 19,499,000 23,810,000 -33,389,000,000 23,833,000 12,399,000 18,410,000 -19,111,000,000 13,480,000 15,334,000 19,658,000  18,338,000 18,710,000 15,267,000 9,410,000 16,818,000 14,736,000 30,734,000 33,475,000 32,818,000 47,191,000 26,770,000 41,118,000 41,118,000 31,491,000 52,135,000 29,872,000 38,983,000 30,025,000 45,078 16,097,000 21,067,000 18,979,000 23,393,000 23,393,000 
        contract liabilities
      22,878,000 6,444,000 6,734,000 -1,944,000,000 300,000 9,000 1,366,000 -59,000,000 69,000  4,000 -1,411,000,000 157,000 519,000 1,648,000 -3,349,000,000 1,892,000 1,266,000 5,571,000 -1,512,000,000 122,000 391,000   4,791,000 2,776,000 1,982,000 773,000                     
        current portion of long-term debt
      152,439,000 149,539,000 150,301,000  94,485,000 91,962,000 84,178,000  39,357,000 42,319,000 42,818,000  20,557,000 20,575,000 19,895,000  19,540,000 18,275,000 18,338,000  16,178,000 17,108,000 21,150,000  32,403,000 32,882,000                       
        current portion of contingent obligations
      31,424,000 33,021,000 40,139,000  37,601,000 32,350,000 27,258,000                                          
        current portion of operating lease liabilities
      1,576,000 1,488,000 1,475,000  1,852,000 1,670,000 1,891,000  1,767,000 1,937,000 2,561,000  2,971,000 3,542,000 3,179,000  3,333,000 3,364,000 3,701,000  4,007,000 3,997,000 3,830,000  3,567,000 3,521,000 3,429,000                      
        long-term debt
      746,894,000 723,061,000 663,622,000  723,487,000 692,150,000 654,953,000  392,648,000 369,735,000 352,719,000  363,237,000 328,486,000 321,167,000  337,609,000 323,233,000 332,095,000  365,588,000 334,561,000 360,401,000  331,767,000 277,266,000                       
        contingent obligations
      68,666,000 63,816,000 91,107,000 127,866,000,000 101,752,000                                            
        operating lease liabilities
      9,923,000 10,279,000 10,612,000  12,010,000 12,705,000 12,868,000  11,761,000 11,762,000 12,385,000  12,730,000 13,028,000 10,755,000  12,475,000 12,660,000 13,302,000  15,110,000 16,102,000 17,095,000  11,464,000 12,311,000 13,143,000                      
        other long-term obligations
      27,759,000 42,910,000 42,792,000  41,768,000 42,103,000 45,738,000  25,924,000 24,488,000 21,946,000  19,917,000 21,385,000 27,834,000  26,426,000 24,806,000 19,784,000  17,159,000 16,827,000 16,431,000  23,420,000 22,177,000      7,547,000                 
        deferred tax liabilities
      139,067,000 132,431,000 127,615,000  118,133,000 113,808,000 108,661,000  80,713,000 80,273,000 79,032,000  65,210,000 60,928,000 59,708,000  54,014,000 52,198,000 52,738,000  61,250,000 57,273,000 60,603,000  46,791,000 47,427,000 49,431,000 40,180,000 6,749,000 18,022,000 30,586,000 31,435,000 21,527,000 16,781,000               
        shareholders' equity
      471,088,000 460,216,000 461,931,000  391,914,000 379,631,000 365,945,000  339,636,000 336,623,000 326,219,000  281,059,000 278,866,000 289,948,000  263,023,000 254,320,000 251,888,000  238,341,000 234,266,000 187,760,000                          
        common shares
      288,524,000 295,074,000 298,858,000  229,455,000 229,455,000 229,455,000  229,455,000 229,455,000 229,455,000  229,455,000 237,897,000 246,553,000  246,815,000 246,815,000 246,545,000  254,689,000 254,689,000 221,637,000  225,707,000 224,346,000 224,259,000 223,603,000 285,435,000 305,382,000 304,896,000 303,927,000 303,593,000 303,505,000 299,973,000 299,973,000 299,973,000 299,973,000 299,973,000 299,973,000 299,973,000 299,871,000 298,436  297,216,000  296,198,000 296,198,000 
        treasury shares
      -14,743,000 -16,156,000 -16,036,000  -15,809,000 -16,394,000 -16,277,000  -16,052,000 -16,701,000 -16,554,000  -16,324,000 -17,997,000 -17,869,000  -17,735,000 -18,158,000 -18,080,000  -17,926,000 -21,870,000                           
        additional paid-in capital
      7,727,000 16,783,000 20,856,000  22,524,000 23,279,000 22,140,000  19,329,000 24,578,000 23,231,000  21,046,000 30,550,000 38,128,000  36,257,000 40,806,000 40,188,000  45,620,000 51,153,000 49,755,000  49,028,000 54,771,000 53,837,000 57,169,000 22,949,000 10,664,000 7,618,000 6,279,000 7,825,000 7,439,000               
        retained earnings
      179,610,000 165,698,000 158,877,000  154,398,000 143,060,000 131,727,000  108,060,000 99,347,000 89,726,000  46,482,000 28,398,000 23,143,000                           800,000       
        accumulated other comprehensive income
      9,970,000    1,346,000 231,000 -1,100,000  -1,156,000 -56,000 361,000  400,000 18,000                 5,000                  
        total liabilities and shareholders’ equity
      1,871,847,000 1,827,215,000 1,794,482,000  1,694,136,000 1,624,708,000 1,580,211,000  1,009,065,000 971,317,000 950,015,000  917,369,000 870,183,000 879,520,000  874,932,000 817,158,000 841,547,000  844,078,000 816,477,000 836,749,000  795,168,000 774,889,000 752,479,000 399,050,000 407,662,000 487,620,000 759,761,000   702,617,000               
        accumulated other comprehensive loss
       -1,183,000 -624,000              -6,000                                
        working capital assets
                                                      
        working capital liabilities
                                                      
        total net working capital
         61,360,000,000    -35,729,000,000    12,354,000,000    19,602,000,000    7,557,000,000    7,065,000                         
        property, plant and equipment
         1,246,584,000,000    1,142,946,000,000    645,810,000,000    640,950,000,000    633,704,000,000    587,729,000    307,293,000  272,693,000 326,741,000 331,314,000 326,550,000 328,743,000 347,396,000 354,419,000 354,419,000            
        credit facility
         395,844,000,000    317,488,000,000    180,000,000,000    110,000,000,000    220,000,000,000                             
        equipment financing
         253,639,000,000    220,466,000,000                                         
        mortgage
         27,600,000,000    28,429,000,000    29,231,000,000    30,000,000,000    21,206,000,000    21,739,000                         
        total debt
         804,949,000,000    679,809,000,000    424,912,000,000    385,626,000,000    429,522,000,000    412,131,000                         
        convertible debentures
         129,106,000,000    129,750,000,000    129,750,000,000    129,750,000,000    55,000,000,000    94,031,000                         
        net debt
         856,180,000,000    720,945,000,000    355,768,000,000    369,025,000,000    385,607,000,000    406,587,000                         
        total shareholders’ equity
         388,902,000,000    356,654,000,000    305,919,000,000    278,463,000,000    248,443,000,000                             
        invested capital
         1,245,082,000,000    1,077,599,000,000    661,687,000,000    647,488,000,000    634,050,000,000    586,706,000                         
        24
                                                      
        long-term portion of contingent obligations
           81,478,000 91,834,000                                          
        obligation related to mackellar acquisition
             113,426,000,000                                         
        deferred tax assets
              284,000 77,000   374,000 374,000 394,000      13,605,000 13,117,000 17,119,000  10,663,000 9,421,000 11,304,000 8,427,000 5,658,000 8,645,000 1,607,000 2,785,000 2,843,000 3,481,000               
        contract costs
                     2,673,000,000    1,969,000,000    1,016,000                         
        finance lease obligations
                 41,804,000,000 21,690,000 26,416,000 31,203,000 54,721,000,000 35,584,000 40,831,000 47,436,000 69,472,000,000 49,098,000 54,844,000 61,107,000 76,278,000 54,512,000 64,398,000 67,823,000                      
        financing obligations
                 32,889,000,000    47,945,000,000    51,118,000,000    15,435,000                         
        promissory notes
                 11,238,000,000    13,210,000,000    12,726,000,000    14,648,000                         
        senior debt
                 265,931,000,000    225,876,000,000    353,316,000,000    296,361,000                         
        (i)includes
                                                      
        (ii)see
                                                      
        goodwill and intangible assets
                  7,043,000 6,616,000 5,778,000  3,988,000                                
        current portion of finance lease obligations
                  21,285,000 23,294,000 25,308,000  26,416,000 27,283,000 28,905,000  28,958,000 30,272,000 32,700,000  30,507,000 30,675,000 37,270,000                      
        includes current portion.
                                                      
        see “non-gaap financial measures”.
                                                      
        the prior year amounts are adjusted to reflect a change in accounting policy. see “accounting estimates, pronouncements and measures”.
                                                      
        derivative financial instruments
                        607,000           1,175,000 7,736,000 12,790,000 14,291,000 75,001,000 86,189,000 88,707,000 88,707,000 60,015,000 50,562,000 55,774,000 87,629,000 90,978,000 93,019 96,676,000 104,080,000 83,843,000 60,863,000 60,863,000 
        deficit
                      -2,308,000 -15,143,000 -16,765,000  -44,042,000 -49,706,000         -168,943,000 -137,826,000 -140,195,000 -129,886,000 -121,431,000 -142,228,000  -143,037,000 -157,811,000 -15,121,000 -422,000  -19,287 -40,180,000 -65,557,000 -67,625,000 -55,526,000 -55,526,000 
        26
                                                      
        current assets - sum
                          118,900,000 98,437,000      77,975,000 118,374,000 151,745,000 321,904,000                  
        current liabilities - sum
                          97,532,000 102,604,000      87,203,000 74,888,000 112,137,000 233,831,000                  
        subsequent events
                                                      
        credit facilities
                             190,000,000                         
        nuna credit facility
                                                      
        total shareholders' equity
                             180,119,000                         
        shareholders' equity attributable to common shareholders
                              172,761,000 173,090,000 158,727,000                      
        non-controlling interest
                              452,000 567,000 453,000                      
        current portion of long term debt
                                30,617,000   13,358,000    6,072,000 6,072,000 7,591,000 7,591,000 2,065,000           
        long term debt
                                265,227,000 62,190,000 58,733,000 103,023,000 313,946,000   22,374,000 23,892,000 25,409,000 25,409,000 9,735,000           
        other long term obligations
                                29,338,000 18,231,000 3,382,000 6,389,000 11,040,000                  
        current portion of capital lease obligation
                                 28,441,000 22,467,000                    
        capital lease obligations
                                 40,527,000   1,488,000 6,212,000 7,314,000 8,340,000 9,083,000 9,898,000 9,898,000 11,243,000 12,075,000 12,962,000 11,804,000 9,968,000 10,043 7,840,000 5,169,000 5,699,000 6,514,000 6,514,000 
        unbilled revenue
                                  28,405,000 46,927,000 141,521,000 137,197,000 90,284,000 84,702,000 82,232,000 67,615,000 67,615,000 59,064,000 55,907,000 60,657,000 110,160,000 89,533,000 70,883 73,447,000 72,689,000 57,029,000 82,833,000 82,833,000 
        plant and equipment
                                  256,789,000         340,513,000 329,705,000 338,749,000 335,762,000 331,575,000 281,039 284,762,000 280,490,000 255,434,000 255,963,000 255,963,000 
        billings in excess of costs incurred and estimated earnings on uncompleted contracts
                                  2,421,000 8,114,000 12,811,000 4,024,000 3,067,000 1,614,000 1,901,000 4,197,000 4,197,000 2,069,000 2,155,000 6,842,000 13,593,000 12,328,000 4,772 3,619,000 1,979,000  2,999,000 2,999,000 
        capital lease obligation
                                  38,918,000                    
        cash and cash equivalents
                                   6,853,000 1,797,000 56,180,000 78,868,000 103,005,000 96,443,000 97,716,000 97,716,000 80,273,000 98,880,000 42,309,000  51,332,000 32,871 21,243,000  9,480,000 7,895,000 7,895,000 
        current portion of derivative financial instruments
                                   3,353,000 2,832,000 2,743,000 2,550,000 22,054,000 5,084,000 5,017,000 5,017,000 4,639,000 11,439,000 12,226,000 7,203,000 4,803,000 4,720 4,640,000 4,458,000 3,920,000   
        liabilities held for sale
                                                      
        investment in and advances to unconsolidated joint venture
                                    1,324,000 3,691,000 3,215,000                
        goodwill
                                    32,901,000 25,111,000 25,111,000 25,111,000 25,111,000 25,361,000 25,361,000 23,872,000 23,872,000 167,319,000 200,072,000 200,072,000 200,072 200,056,000 200,056,000 200,056,000 199,392,000 199,392,000 
        current portion of capital lease obligations
                                    3,525,000 4,416,000 4,699,000 5,053,000 5,287,000 5,295,000 5,295,000 5,395,000 5,409,000 10,202,000 5,398,000 4,747,000 4,733 3,915,000 3,224,000 3,221,000 3,195,000 3,195,000 
        current portion of term facilities
                                    10,000,000 14,000,000 10,000,000                
        shareholders’ equity
                                                      
        shareholders’ equity - sum
                                    143,576,000                  
        contingencies
                                                      
        current assets:
                                                      
        deferred financing costs
                                     8,398,000 8,539,000 6,725,000               
        current liabilities:
                                                      
        long term accrued liabilities
                                     16,625,000 15,317,000 14,943,000               
        deferred lease inducements
                                     707,000 734,000 761,000 788,000 970,000 970,000 810,000 836,000 862,000 888,000 915,000 941 967,000 993,000 1,108,000   
        term facilities
                                     59,446,000 65,946,000                
        8¾% senior notes
                                                      
        series 1 debentures
                                     225,000,000 225,000,000                
        asset retirement obligation
                                     377,000 368,000 360,000 351,000 343,000 343,000 395,000 386,000 470,000 417,000 726,000       
        shareholders’ equity:
                                                      
        8 ¾% senior notes
                                                      
        director deferred stock unit liability
                                      2,674,000 2,548,000 1,834,000 1,363,000 1,363,000 1,220,000 546,000 380,000 421,000 459,000       
        restricted share unit liability
                                      1,333,000 1,030,000 639,000              
        investment in and advances to unconsolidated joint ventures
                                       2,917,000               
        liabilities and shareholders' equity
                                                      
        senior notes
                                       203,120,000 204,953,000 210,396,000 210,396,000 231,527,000 252,899,000 244,214,000 211,843,000 195,613,000 198,245 190,546,000 190,860,000 204,820,000 230,580,000 230,580,000 
        shareholders' equity:
                                                      
        future income taxes
                                        12,954,000 7,307,000 7,307,000 7,865,000 7,033,000 2,488,000 7,290,000 10,563,000 8,217 3,165,000 21,956,000 16,067,000 14,593,000 14,593,000 
        contributed surplus
                                        7,135,000 6,817,000 6,817,000 6,340,000 5,275,000 4,993,000 4,455,000 3,824,000 4,215 3,945,000 4,075,000 3,687,000 3,606,000 3,606,000 
        current assets: - sum
                                         278,063,000             
        current liabilities: - sum
                                         141,711,000             
        shareholders’ equity: - sum
                                         164,562,000             
        inventory
                                             15,210,000 9,403,000 6,900,000 110 114,000 154,000 156,000 156,000 156,000 
        intangible assets, net of accumulated amortization of 2,927
                                             1,306,000         
        intangible assets, net of accumulated amortization of 2,659
                                              1,574,000        
        cheques issued in excess of cash deposits
                                              311,000    4,669,000    
        revolving credit facility
                                              10,000,000   20,000,000  20,000,000 20,500,000 20,500,000 
        intangible assets, net of accumulated amortization of 2,384
                                               1,850,000       
        asset held for sale
                                                    8,268,000 8,268,000 
        intangible assets, net of accumulated amortization of 19,450
                                                2,128      
        deferred financing costs, net of accumulated amortization of nil
                                                      
        current portion of revolving credit facility
                                                      
        director share unit liability
                                                190      
        intangible assets, net of accumulated amortization of 19,181
                                                 2,447,000     
        common shares (authorized – unlimited number of voting and non-
                                                      
        voting common shares; issued and outstanding – 35,951,684
                                                      
        voting common shares (march 31, 2007 – 35,192,260 voting
                                                      
        common shares and 412,400 non-voting common shares))
                                                 298,481,000     
        intangible assets, net of accumulated amortization of 18,738
                                                  2,883,000    
        intangible assets, net of accumulated amortization of 18,556 (march
                                                      
        31, 2007 - 17,608)
                                                   3,065,000   
        deffered financing costs, net of accumulated amortization of nil (march
                                                      
        31,2007 - 7,595)
                                                      
        billings in excess of costs incurred and estimated earnings on
                                                      
        uncompleted contracts
                                                   5,459,000   
        common shares (authorized – unlimited number of voting and
                                                      
        non-voting common shares; issued and outstanding –
                                                      
        35,339,660 voting common shares and 412,400 non-voting
                                                      
        common shares (march 31, 2007 – 35,192,260 voting common
                                                      
        shares and 412,400 non-voting common shares))
                                                   297,216,000   
        guarantee
                                                      
        intangible assets, net of accumulated amortization of 17,608
                                                    600,000 600,000 
        deferred financing costs, net of accumulated amortization of 7,595
                                                    11,356,000 11,356,000 
        redeemable preferred shares
                                                      
        commitments
                                                      
        united states generally accepted accounting principles
                                                      
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-09-30 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 2018-06-30 2015-03-31 2012-02-02 2010-09-30 2010-06-30 2009-12-31 2009-09-30 2009-06-30 2008-09-30 2008-06-30 2007-09-30 2007-06-30 
                                               
          cash from
                                               
          operating activities:
                                               
          net income
        7,046,000 4,087,000 6,163,000 30,184,000 -106,000 2,638,000 11,369,000 51,754,000 -875,000 -9,584,000 21,846,000 67,351,780,000 12,706,000 -6,043,000 13,557,000             537,000 -504,000           
          adjustments to reconcile net income to cash from operating activities:
                                               
          depreciation
        -5,019,000 -6,203,000 60,714,000  -1,269,000 -4,318,000 43,941,000  4,240,000 -12,033,000 36,385,000  36,000 -4,352,000 30,692,000  -4,999,000 -4,773,000 31,198,000  7,325,000 -20,757,000 32,308,000    29,281,000 -501,000 11,538,000 2,265,000 -149,000 8,203,000 -814,000 2,640,000 9,347,000 2,510,000 8,158,000 -1,658,000 8,976,000 
          amortization of deferred financing costs
        84,000 110,000 582,000  16,000 5,000 759,000  4,000 3,000 289,000  -27,000 -12,000 281,000  76,000 29,000 206,000  255,000 -83,000 266,000    191,000 -102,000 234,000 29,000 -169,000 526,000       71,000 
          loss on disposal of property, plant and equipment
        850,000      261,000    1,213,000            157,000    21,000      483,000       
          loss on derivative financial instruments
        934,000 -6,162,000 6,912,000                                     
          stock-based compensation expense
        -1,120,000      3,608,000  779,000 -1,133,000 5,937,000  2,281,000 -3,121,000 1,277,000  -7,713,000 5,277,000 2,374,000  -456,000      5,978,000 2,522,000 235,000 -465,000 1,248,000 839,000 808,000 -1,185,000 1,805,000 34,000 636,000 29,000 359,000 
          equity earnings in affiliates and joint ventures
            2,201,000    4,925,000 115,000 -9,523,000  -5,741,000 -2,094,000 -6,241,000  -2,100,000 -1,264,000 -3,469,000  -3,146,000                   
          dividends received from affiliates and joint ventures
        7,000 -1,000,000 1,087,000                    1,431,000                 
          change in fair value of contingent obligations
        13,743,000 -16,268,000 3,030,000  10,426,000 6,170,000 5,393,000                                 
          unrealized foreign currency loss
        1,824,000                                       
          deferred income tax expense
        1,050,000 2,506,000 2,467,000  -2,091,000 6,450,000 171,000  -952,000 -6,076,000 7,266,000    3,482,000    4,950,000  2,497,000 -4,985,000 5,977,000    2,475,000             
          other adjustments to cash from operating activities
        -626,000 -153,000 664,000  -1,409,000 3,140,000 647,000  1,229,000 -979,000 654,000  514,000 -790,000 333,000  816,000 -475,000 -88,000  518,000 -678,000 204,000      22,000           
          net changes in non-cash working capital
        18,742,000 25,301,000 -24,513,000  -21,756,000 52,128,000 -62,026,000  -17,194,000 47,051,000 -34,011,000  -10,490,000 22,781,000 -20,669,000  3,534,000 15,610,000 -18,475,000  -33,981,000      2,737,000 1,201,000 10,929,000 41,232,000 -28,852,000 12,356,000 -26,525,000 21,139,000 -19,097,000 -41,607,000 3,265,000 769,000 406,000 
          investing activities:
                                               
          purchase of property, plant and equipment
        8,541,000 18,413,000 -93,073,000  13,495,000 -8,654,000 -66,653,000  -876,000 -1,923,000 -36,496,000  -4,084,000 -1,856,000 -25,265,000  2,718,000 -2,086,000 -29,189,000  1,978,000         -4,923,000 -4,741,000 -6,018,000 18,781,000       
          additions to intangible assets
        -142,000 127,000 -713,000  -1,571,000 264,000 -970,000      401,000 530,000 -1,573,000  80,000 54,000 -311,000                     
          proceeds on disposal of property, plant and equipment
        1,225,000 -855,000 2,070,000  8,993,000 -611,000 1,103,000  -73,000 644,000 1,198,000  -1,205,000 1,009,000 518,000  -1,453,000 7,164,000 1,068,000  -1,349,000 766,000 641,000    22,000     60,000 -104,000       
          net advances of loans with affiliates and joint ventures
            827,000                                   
          cash settlement of derivative financial instruments
              4,015,000                                 
          financing activities:
                                               
          proceeds from long-term debt
        -415,585,000 371,112,000 97,181,000  -25,871,000 493,000 75,392,000  15,000,000    16,600,000 3,400,000 20,000,000  -54,845,000 53,050,000 21,700,000  -15,090,000 -10,278,000 60,368,000                 
          repayment of long-term debt
        382,288,000 -375,095,000 -45,489,000  17,152,000 -8,539,000 -33,890,000  -5,820,000 10,559,000 -42,233,000  10,132,000 -10,734,000 -4,866,000  75,663,000 -51,074,000 -29,207,000  39,028,000                   
          settlement of convertible debentures
          -1,357,000                                     
          financing costs
        6,824,000    36,000            3,475,000              7,488,000 -7,704,000   -1,115,000    -767,000 
          dividends paid
        128,000 -535,000 -3,022,000  62,000 -2,674,000  -20,000 -523,000 -2,098,000                             
          share purchase program
        -4,292,000 -6,973,000 -2,521,000          1,570,000 -16,549,000 -868,000   15,493,000 -16,006,000                     
          purchase of treasury shares
        -2,657,000 3,000 -123,000  -2,016,000 -5,000 -112,000  -5,468,000 -31,000 -116,000  -1,592,000 -61,000 -67,000  -5,200,000 -78,000  -2,707,000                   
          payments towards contingent obligations
         -19,783,000 -865,000                                     
          increase
                                               
          effect of exchange rate on changes in cash
        1,363,000 1,990,000 -1,075,000    -2,368,000   -472,000 55,000  357,000                           
          cash, beginning of period
        784,000 366,000 77,875,000  -11,752,000 -8,519,000 88,614,000  6,090,000 -53,485,000 69,144,000  -8,405,000 3,521,000 16,601,000  -15,759,000 -12,182,000 43,915,000  2,696,000 33,089,000 5,544,000    19,508,000 11,149,000 956,000           
          cash, end of period
        22,612,000 784,000 78,241,000  9,327,000 -11,752,000 80,095,000  18,692,000 6,090,000 15,659,000  11,470,000 -8,405,000 20,122,000  -1,770,000 -14,942,000 31,733,000  -998,000 2,696,000 38,633,000    20,415,000 -22,829,000 25,665,000           
          equity loss (earnings) in affiliates and joint ventures
              1,512,000                                 
          net collections (advances) of loans with affiliates and joint ventures
              5,772,000                                 
          decrease in cash
              -6,151,000                                 
          cash provided by
                                               
          (gain) loss on disposal of property, plant and equipment
          -974,000      402,000         195,000 -258,000             -4,000        
          stock-based compensation (benefit) expense
          -3,408,000                                     
          equity (earnings) loss in affiliates and joint ventures
          -3,283,000                                     
          unrealized foreign currency gain
          1,977,000                                     
          net (advances) collections of loans with affiliates and joint ventures
          -2,065,000                                     
          increase in cash
          1,441,000  21,185,000    13,285,000 60,047,000 -53,540,000    3,530,000  13,995,000 -2,760,000 -12,182,000  -3,694,000 -30,393,000 33,089,000    907,000  24,709,000           
          interim consolidated financial statements(unaudited)march 31, 2025
                                               
          revenue
                           500,374,000    552,798,000                
          total combined revenue
                                               
          gross profit
                           94,382,000    78,126,000                
          gross profit margin
                           18,900    2,400                
          combined gross profit
                                               
          combined gross profit margin
                                               
          operating income
                           68,945,000                    
          adjusted ebitda
                           175,450,000    136,981,000                
          adjusted ebitda margin
                           35,100    1,800                
          adjusted net earnings
                           48,822,000                    
          cash from operating activities
                           147,272,000                    
          capital expenditures
                                              
          free cash flows
                           147,272,000                    
          cash from operating activities prior to change in working capital
                           150,084,000    119,595,000                
          free cash flow
                           43,482,000                    
          purchase of ppe
                           117,300,000                    
          sustaining capital additions
                           98,752,000                    
          growth capital additions
                           37,665,000                    
          basic net income per share
                           1,750    1,160                
          adjusted eps
                           1,730    1,310                
          cash provided by:
                                               
          adjustments to reconcile to net cash from operating activities:
                                               
          gain on disposal of property, plant and equipment
            316,000         1,010,000 77,000                         
          gain on derivative financial instruments
            299,000                                   
          cash settlement of deferred share units
                                               
          dividends and advances received from affiliates and joint ventures
            -76,000 -3,186,000 3,344,000  -1,340,000 -388,000 4,277,000  -5,210,000 6,181,000 1,396,000    8,598,000                     
          net payment on the wind up of affiliates and joint ventures
                  -387,000                             
          payments towards contingent consideration
                                               
          effect of foreign exchange rate on changes in cash
            -106,000                                   
          interim consolidated financial statements(unaudited)september 30, 2024
                                               
          long-term contract liabilities
             -2,316,000 2,887,000                                 
          interim consolidated financial statements(unaudited)june 30, 2024
                                               
          interim consolidated financial statements(unaudited)march 31, 2024
                                               
          net realized and unrealized gain on derivative financial instruments
                -766,000                               
          cash settlement of stock-based compensation
                                               
          investment in affiliates and joint ventures
                      -163,000      123,000                   
          net repayments of loans from affiliates and joint ventures
                13,336,000    1,938,000    1,120,000                       
          interim consolidated financial statements(unaudited)september 30, 2023
                                               
          interim consolidated financial statements(unaudited)june 30, 2023
                                               
          net unrealized gain on derivative financial instruments
                  -2,509,000                             
          net repayments and advances of loans to affiliates and joint ventures
                  -5,230,000                             
          interim consolidated financial statements(unaudited)march 31, 2023
                                               
          cash settlement of former director's deferred share unit plan
                                               
          deferred income tax (benefit) expense
                    3,060,000                           
          acquisition of dgi trading pty limited, net of cash acquired
                                               
          settlement of derivative financial instrument
                         -5,351,000 6,211,000                     
          repayment of finance lease obligations
                    66,000 104,000 -6,905,000  -1,928,000 -143,000 -8,154,000  1,123,000                   
          dividend payment
                    45,000 -1,139,000 -1,138,000    -1,040,000                     
          proceeds from exercise of stock options
                         249,000 96,000   254,000 29,000                 
          interim consolidated financial statements(unaudited)september 30, 2022
                                               
          interim consolidated financial statements(unaudited)june 30, 2022
                                               
          net (advances) repayments of loans to affiliates and joint ventures
                      -328,000                         
          interim consolidated financial statements(unaudited)march 31, 2022
                                               
          net income and comprehensive income available to shareholders
                           49,208,000    29,317,000                
          net realized on derivative financial instruments
                                               
          dividend payments
                        3,000    -139,000                   
          effect of exchange rate on changes in cash and cash equivalents
                                               
          net income and comprehensive income
                         -16,644,000 19,386,000  -6,469,000 -5,736,000 19,035,000    7,260,000             
          interim consolidated financial statements(unaudited)june 30, 2021
                                               
          net realized and unrealized (gain) loss on derivative financial instruments
                          -2,484,000                     
          net repayments of loans to affiliates and joint ventures
                          790,000                     
          interim consolidated financial statements(unaudited)march 31, 2021
                                               
          see “non-gaap financial measures”.
                                               
          16
                                               
          cash from:
                                               
          amortization of intangible assets
                            146,000 -110,000 198,000    208,000 -385,000 473,000 502,000 84,000 588,000 41,000 -12,000 248,000 -2,000 278,000 112,000 70,000 
          cash settlement of directors' deferred share unit plan
                                               
          net repayments of loans to affiliates and joint venture partners
                            1,295,000 -648,000 720,000                 
          distribution paid to noncontrolling interest of affiliates
                                               
          unrealized gain on derivative financial instruments
                                               
          interim consolidated financial statements(unaudited)june 30, 2020
                                               
          unrealized loss on derivative financial instruments
                              2,210,000               -2,712,000 23,281,000 
          interim consolidated financial statements (unaudited)march 31, 2020
                                               
          operating data
                                               
          adjusted ebit
                               55,782,000                
          per share information
                                               
          diluted net income per share
                               970                
          balance sheet data
                                               
          total assets
                                               
          total debt
                                               
          cash
                                               
          net debt
                                               
          total shareholders' equity
                                               
          invested capital
                                               
          outstanding common shares, excluding treasury shares
                                               
          cash dividend declared per share
                                               
          project costs
                                               
          equipment costs
                                               
          general and administrative expenses
                                               
          interest expense
                                               
          adjustments:
                                               
          income tax (benefit) expense
                                               
          ebit
                                               
          gain on disposal of assets held for sale
                                  23,000             
          restructuring costs
                                               
          pre-2019 inventory correction
                                               
          loss on sublease
                                               
          loss on legacy claim settlement
                                               
          cash from investing activities
                                               
          cash from financing activities
                                               
          net decrease in cash
                                               
          management's discussion and analysisjune 30, 2019
                                               
          equity earnings in affiliates and joint venture
                                               
          proceeds on disposal of assets held for sale
                                  94,000 -28,801,000 29,553,000 60,000   1,018,000   -190,000 192,000  10,200,000 
          net repayment of loans to affiliate and joint venture partners
                                  2,372,000             
          repayment of credit facilities
                                               
          increase in credit facilities
                                  46,000,000        11,800,000     
          issuance of convertible debentures
                                  55,000,000             
          repayment of promissory notes
                                               
          mortgage repayment
                                               
          cash distribution paid to noncontrolling interest of subsidiary
                                               
          proceeds from stock options exercised
                                  931,000    177,000 64,000        
          share purchase programs
                                               
          purchase of treasury shares for settlement of certain equity classified stock-based compensation
                                               
          interim consolidated financial statements (unaudited)march 31, 2019
                                               
          net repayment of
                                               
          investment in partnership
                                               
          repayment of credit facility
                                               
          increase in credit facility
                                               
          repayment of capital lease obligations
                                     -499,000 44,000 -1,428,000 206,000 -7,000 -1,470,000 -240,000 -1,225,000 -4,000 -802,000 
          proceeds from options exercised
                                               
          lease inducement paid on sublease
                                               
          loss on disposal of plant and equipment
                                    13,000      41,000 468,000 1,144,000 307,000 269,000 
          purchase of plant and equipment
                                          -19,710,000 43,172,000 -59,349,000 -23,159,000 -10,193,000 
          proceeds on disposal of plant and equipment
                                    86,000      138,000 1,944,000 1,352,000 -3,464,000 3,690,000 
          proceeds from option exercised
                                    83,000           
          purchase of treasury shares for share unit settlement
                                               
          net loss from continuing operations
                                               
          items not affecting cash:
                                               
          equity in earnings of unconsolidated joint venture
                                               
          amortization of deferred lease inducements
                                     1,000 -27,000 16,000 -9,000 -26,000 -1,000 -26,000   
          loss on disposal of property plant and equipment
                                               
          loss on disposal of assets held for sale
                                        608,000   -20,000 22,000   
          loss on debt extinguishment
                                       4,346,000        
          cash settlement of restricted share unit plan
                                               
          settlement of stock award plan
                                               
          accretion of asset retirement obligation
                                     1,000 1,000 8,000   9,000     
          proceeds on wind up of unconsolidated joint venture
                                               
          redemption of series 1 debentures
                                               
          increase in cash and cash equivalents from continuing operations
                                               
          cash from discontinued operations:
                                               
          operating activities
                                               
          investing activities
                                               
          financing activities
                                               
          increase in cash and cash equivalents
                                     23,969,000     -18,607,000 -69,793,000 18,461,000  1,585,000 
          cash and cash equivalents, beginning of period
                                     -78,320,000 -24,137,000 103,005,000 17,443,000 -18,607,000 98,880,000 18,461,000 32,871,000 1,585,000 7,895,000 
          cash and cash equivalents, end of period
                                     -54,383,000 -22,688,000 78,868,000 -1,273,000 17,443,000 80,273,000  51,332,000  9,480,000 
          net income for the period
                                     -4,259,000 12,678,000 -10,309,000 19,988,000   -20,318,000 19,096,000 3,100,000 -1,032,000 
          equity in loss of unconsolidated joint venture
                                     335,000          
          realized and unrealized foreign exchange gain on 8 3/4% senior notes
                                               
          realized and unrealized gain on derivative financial instruments
                                               
          acquisition
                                        4,350,000      -1,581,000 
          investment in and advances to unconsolidated joint venture
                                      -209,000 -541,000        
          investing activities: - sum
                                               
          redemption of 8 3/4% senior notes
                                               
          issuance of series 1 debentures
                                       225,000,000        
          settlement of swap liabilities
                                       -91,125,000        
          financing activities: - sum
                                               
          (gain) loss on disposal of assets held for sale
                                          -317,000     
          unrealized foreign exchange gain on 8¾% senior notes
                                       -732,000        
          unrealized (gain) loss on derivative financial instruments measured at fair value
                                               
          deferred income taxes
                                      3,478,000 -3,241,000        
          addition to intangible assets
                                      -882,000 -571,000        
          additions to assets held for sale
                                        808,000      -2,248,000 
          repayment of term facilities
                                      -2,500,000        
          increase in term facilities
                                       50,000,000        
          redemption of 8¾% senior notes
                                       -202,410,000        
          cash settlement of stock options
                                               
          equity in loss (earnings) of unconsolidated joint venture
                                       243,000        
          unrealized loss on derivative financial instruments measured at fair value
                                       3,008,000        
          decrease in cash and cash equivalents
                                       -24,137,000        
          net income for the year
                                          14,774,000     
          impairment of goodwill
                                               
          unrealized foreign exchange (gain) loss on senior notes
                                               
          unrealized gain on derivative financial instruments measured at fair value
                                               
          acquisition, net of cash acquired
                                               
          proceeds of disposal of assets held for sale
                                          960,000     
          repayment of long term debt
                                               
          increase in long term debt
                                        -24,237,000       
          cash and cash equivalents, beginning of year
                                               
          cash and cash equivalents, end of year
                                               
          amortization of bond issue costs, premiums and financing costs
                                        -2,000 -9,000 221,000  174,000   
          unrealized change in the fair value of derivative financial instruments
                                        -28,634,000 25,225,000 379,000 9,883,000 -2,933,000   
          accretion expense — asset retirement obligation
                                        29,000       
          future income taxes
                                        7,852,000 -4,690,000 3,997,000 -3,394,000 5,309,000 5,598,000 -3,626,000 
          cheques issued in excess of cash deposits
                                               
          stock options exercised
                                           -652,000 677,000   
          unrealized foreign exchange loss on senior notes
                                               
          increase, (decrease) in cash and cash equivalents
                                               
          supplemental cash flow information
                                               
          unrealized foreign exchange gain on senior notes
                                          -19,319,000  -1,831,000  -17,150,000 
          write-down of other assets to replacement cost
                                               
          gain on repurchase of nacg preferred corp. series a preferred shares
                                               
          loss on extinguishment of debt
                                               
          change in redemption value and accretion of redeemable preferred shares
                                               
          increase in revolving credit facility
                                               
          repayment of 9% senior secured notes
                                               
          repurchase of naepi series a preferred shares
                                               
          repurchase of nacg preferred corp. series a preferred shares
                                               
          issue of common shares
                                              740,000 
          share issue costs
                                               
          repurchase of common shares for cancellation
                                               
          unrealized foreign exchange (gain)/loss on senior notes
                                               
          amortization of bond issue costs, premiums, and financing costs
                                               
          accretion expense – asset retirement obligation
                                               
          cheques issued excess of cash deposits
                                               
          accretion expense - asset retirement obligation
                                            49,000   
          decrease in revolving credit facility
                                             -19,500,000 -500,000 
          gain on disposal of plant and equipment
                                               
          unrealized (gain) loss on derivative financial instruments
                                               
          issue of 9% senior secured notes
                                               
          repayment of senior secured credit facility
                                               
          issue of series b preferred shares
                                               
          repurchase of series b preferred shares
                                               
          loss on disposal of asset held for sale
                                              316,000 
          amortization of bond issue costs
                                               
          accretion of redeemable preferred shares
                                               
          cash and cash equivalents (cheques issued in excess of cash deposits), end of period
                                               
          amortization of bond issue fees
                                              397,000 
          gain on disposal of equipment
                                               
          unrealized foreign exchange gain on senior
                                               
          increase in senior secured credit facility
                                               
          unrealized