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Other information (Details) (CAD) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Cash paid during the year for: |  |
Interest | 25,528 | 29,625
Income taxes | 91 | 5,072
Cash received during the year for: |  |
Interest | 256 | 8
Income taxes | 3,797 | 97
Non-cash transactions: |  |
Acquisition of property, plant and equipment for continuing operations by means of capital leases | 13,812 | 53,774
Additions to assets held for sale | (5,123) | (10,444)
Net change in property, plant and equipment resulting from reclassification to inventory | 0 | 2,219
Change in non-cash working capital related to piling discontinued operations, excluded from non-cash working capital for continuing operations: |  |
Accounts receivable, net | 29,765 | 70,577
Unbilled revenue | 30,275 | 56,625
Inventories | (644) | 3,416
Prepaid expenses and deposits | 634 | 5,050
Accounts payable | (31,847) | (35,292)
Accrued liabilities | (1,603) | (11,534)
Long term portion of liabilities related to equipment leases | (209) | (1,721)
Billings in excess of costs incurred and estimated earnings on uncompleted contracts | (872) | (2,160)
Net changes in non-cash working capital | 25,499 | 84,961
Restricted share units (RSUs) | Restricted share unit plan |  |
Non-cash transactions: |  |
Net change in accrued liabilities related to current portion of plan liabilities | 1,430 | (1,639)
Deferred stock units (DSUs) | Directors' deferred share unit plan |  |
Non-cash transactions: |  |
Net change in accrued liabilities related to current portion of plan liabilities | (253) | 253
Purchase of property, plant and equipment |  |
Non-cash transactions: |  |
Net change in accounts payable related to purchase of property, plant and equipment | 2,931 | (2,198)
Net change in current portion of equipment lease liabilities included in accrued liabilities related to the purchase of property, plant and equipment | (159) | (1,574)
Net change in long term portion of equipment lease liabilities related to the purchase of property, plant and equipment | 1,702 | (1,702)
Continuing operations |  |
Non-cash transactions: |  |
Acquisition of property, plant and equipment for continuing operations by means of capital leases | 13,812 | 47,297

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