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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