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Consolidated Balance Sheets (CAD) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets
Cash	956us-gaap_CashAndCashEquivalentsAtCarryingValue	13,742us-gaap_CashAndCashEquivalentsAtCarryingValue
Accounts receivable, net (note 5 and 15(d))	66,503us-gaap_AccountsAndOtherReceivablesNetCurrent	70,177us-gaap_AccountsAndOtherReceivablesNetCurrent
Unbilled revenue (note 6 and 15(d))	43,622us-gaap_UnbilledContractsReceivable	32,168us-gaap_UnbilledContractsReceivable
Inventories	7,449us-gaap_InventoryNet	5,907us-gaap_InventoryNet
Prepaid expenses and deposits (note 7)	2,253us-gaap_PrepaidExpenseCurrent	2,152us-gaap_PrepaidExpenseCurrent
Assets held for sale (note 8 and 15(a))	29,589us-gaap_AssetsHeldForSaleCurrent	52us-gaap_AssetsHeldForSaleCurrent
Deferred tax assets (note 9)	5,609us-gaap_DeferredTaxAssetsNetCurrent	3,678us-gaap_DeferredTaxAssetsNetCurrent
Total current assets	155,981us-gaap_AssetsCurrent	127,876us-gaap_AssetsCurrent
Plant and equipment, net (note 10)	260,898us-gaap_PropertyPlantAndEquipmentNet	277,975us-gaap_PropertyPlantAndEquipmentNet
Other assets (note 11(a))	9,755us-gaap_OtherAssetsNoncurrent	12,130us-gaap_OtherAssetsNoncurrent
Deferred tax assets (note 9)	29,947us-gaap_DeferredTaxAssetsNetNoncurrent	27,660us-gaap_DeferredTaxAssetsNetNoncurrent
Total Assets	456,581us-gaap_Assets	445,641us-gaap_Assets
Current liabilities
Accounts payable	58,089us-gaap_AccountsPayableCurrent	48,438us-gaap_AccountsPayableCurrent
Accrued liabilities (note 12)	14,997us-gaap_AccruedLiabilitiesCurrent	15,655us-gaap_AccruedLiabilitiesCurrent
Billings in excess of costs incurred and estimated earnings on uncompleted contracts (note 6)	0us-gaap_BillingsInExcessOfCostCurrent	6,357us-gaap_BillingsInExcessOfCostCurrent
Capital Lease Obligations, Current	22,201us-gaap_CapitalLeaseObligationsCurrent	14,996us-gaap_CapitalLeaseObligationsCurrent
Deferred tax liabilities (note 9)	20,056us-gaap_DeferredTaxLiabilitiesCurrent	8,036us-gaap_DeferredTaxLiabilitiesCurrent
Total current liabilities	115,343us-gaap_LiabilitiesCurrent	93,482us-gaap_LiabilitiesCurrent
Long term debt (note 13(a))	64,269us-gaap_LongTermDebtNoncurrent	75,000us-gaap_LongTermDebtNoncurrent
Capital lease obligations (note 14)	41,854us-gaap_CapitalLeaseObligationsNoncurrent	28,299us-gaap_CapitalLeaseObligationsNoncurrent
Other long term obligations (note 16(a))	3,459us-gaap_OtherLiabilitiesNoncurrent	7,207us-gaap_OtherLiabilitiesNoncurrent
Deferred tax liabilities (note 9)	42,077us-gaap_DeferredTaxLiabilitiesNoncurrent	49,818us-gaap_DeferredTaxLiabilitiesNoncurrent
Total liabilities	267,002us-gaap_Liabilities	253,806us-gaap_Liabilities
Shareholders' equity
Common shares (authorized - unlimited number of voting common shares) (note 17(a))	290,800us-gaap_CommonStockValueOutstanding	290,517us-gaap_CommonStockValueOutstanding
Treasury shares (note 17(a))	(3,685)us-gaap_TreasuryStockValue	0us-gaap_TreasuryStockValue
Additional paid-in capital	19,866us-gaap_AdditionalPaidInCapital	14,750us-gaap_AdditionalPaidInCapital
Deficit	(117,402)us-gaap_RetainedEarningsAccumulatedDeficit	(113,432)us-gaap_RetainedEarningsAccumulatedDeficit
Total shareholders' equity	189,579us-gaap_StockholdersEquity	191,835us-gaap_StockholdersEquity
Total liabilities and shareholders' equity	456,581us-gaap_LiabilitiesAndStockholdersEquity	445,641us-gaap_LiabilitiesAndStockholdersEquity
Commitments (note 18)
Contingencies (note 19)

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