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FAIR VALUE MEASUREMENT - Recurring basis (Details) CAD in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 GBP (£) item | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 28, 2015 CAD | Sep. 28, 2015 USD ($)
Commodity hedge |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Term of swap contract | 2 years |  |  |  |
Derivative asset |  | $ 4,230,000 | $ 2,072,000 |  |
Interest rate swaption |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Derivative notional amount |  | 399,000,000 |  |  |
Derivative asset |  | 0 | 4,335,000 |  |
Interest rate swap | Not designated as hedging instruments |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Notional amount |  |  |  | CAD 186.0 | $ 133,900,000
Derivative liabilities |  | 3,863,000 | 21,546,000 |  |
Interest rate swap | Designated as hedging instruments | Cash flow hedge |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Number of financial institutions | item | 2 |  |  |  |
Notional amount | £ 78,400,000.00000 | 96,800,000 |  |  |
Derivative notional amount |  | 399,000,000.00000 |  |  |
Recurring basis | Significant Other Observable Inputs (Level 2) |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  | 27,716,000 | 8,331,000 |  |
Total liabilities |  | 9,625,000 | 52,586,000 |  |
Recurring basis | Significant Other Observable Inputs (Level 2) | Foreign exchange forward contracts |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  | 10,632,000 | 1,924,000 |  |
Total liabilities |  | 3,496,000 | 5,775,000 |  |
Recurring basis | Significant Other Observable Inputs (Level 2) | Commodity hedge |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  | 4,230,000 | 2,072,000 |  |
Recurring basis | Significant Other Observable Inputs (Level 2) | Interest rate swaption |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  |  | 4,335,000 |  |
Recurring basis | Significant Other Observable Inputs (Level 2) | Interest rate swap |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  | 12,854,000 |  |  |
Total liabilities |  | 5,418,000 | 21,546,000 |  |
Recurring basis | Significant Other Observable Inputs (Level 2) | Warrants |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total liabilities |  | 711,000 | 25,265,000 |  |
Total Fair Value and Carrying Value on the Balance Sheets | Recurring basis |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  | 27,716,000 | 8,331,000 |  |
Total liabilities |  | 9,625,000 | 52,586,000 |  |
Total Fair Value and Carrying Value on the Balance Sheets | Recurring basis | Foreign exchange forward contracts |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  | 10,632,000 | 1,924,000 |  |
Total liabilities |  | 3,496,000 | 5,775,000 |  |
Total Fair Value and Carrying Value on the Balance Sheets | Recurring basis | Commodity hedge |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  | 4,230,000 | 2,072,000 |  |
Total Fair Value and Carrying Value on the Balance Sheets | Recurring basis | Interest rate swaption |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  |  | 4,335,000 |  |
Total Fair Value and Carrying Value on the Balance Sheets | Recurring basis | Interest rate swap |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total assets |  | 12,854,000 |  |  |
Total liabilities |  | 5,418,000 | 21,546,000 |  |
Total Fair Value and Carrying Value on the Balance Sheets | Recurring basis | Warrants |  |  |  |  |
Fair value measurements of the entity's assets or liabilities that are measured at fair value on a recurring basis |  |  |  |  |
Total liabilities |  | $ 711,000 | $ 25,265,000 |  |

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