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Other information (Tables) | 12 Months Ended
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Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract] |
Schedule of supplemental cash flow information | Supplemental cash flow information
Year ended December 31, |  | 2013 |  |  | 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 |
Year ended December 31, |  | 2013 |  |  | 2012 |
Non-cash transactions: |  |  |  |
Acquisition of property, plant and equipment for continuing operations by means of capital leases |  | $ | 13,812 |  |  | $ | 47,297 |
Additions to assets held for sale |  | (5,123 | ) |  | (10,444 | )
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 | )
Net change in property, plant and equipment resulting from reclassification to inventory |  | — |  |  | 2,219 |
Net change in accrued liabilities related to current portion of RSU liability |  | 1,430 |  |  | (1,639 | )
Net change in accrued liabilities related to current portion of DDSU liability |  | (253 | ) |  | 253 |
Schedule of net change in non-cash working capital | Net change in non-cash working capital
Year ended December 31, |  | 2013 |  |  | 2012 |
Operating activities: |  |  |  |
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 | )
|  | $ | 25,499 |  |  | $ | 84,961 |

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- Definition Tabular disclosure of the net increase (decrease) in operating capital in the operating section of the statement of cash flows, represents the entire footnote disclosure that provides details regarding the net change during the reporting period of all assets and liabilities used in operating activities. + References No definition available. + Details
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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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- Details
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