Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Interest Swap Derivatives (Details)

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FAIR VALUE MEASUREMENTS - Interest Swap Derivatives (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis [Roll Forward]    
Designation of interest rate swap as a cash flow hedge   $ 0
Interest Rate Swap [Member] | Level 2 [Member]    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis [Roll Forward]    
Fair value at beginning of period $ (972) (1,072)
Unrealized losses included in interest expense   (63)
Swap ineffectiveness 11  
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss 1,829 1,182
Unrealized losses included in accumulated other comprehensive loss (8,194) (2,528)
Fair value of end of period (7,326) (2,481)
Interest Rate Swap [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis [Roll Forward]    
Fair value at beginning of period (972) (865)
Unrealized losses included in interest expense   0
Designation of interest rate swap as a cash flow hedge   (270)
Swap ineffectiveness 11  
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss 1,829 1,182
Unrealized losses included in accumulated other comprehensive loss (8,194) (2,528)
Fair value of end of period (7,326) (2,481)
Interest Rate Swap [Member] | Level 2 [Member] | Not Designated as Hedging Instrument [Member]    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis [Roll Forward]    
Fair value at beginning of period 0 (207)
Unrealized losses included in interest expense   (63)
Designation of interest rate swap as a cash flow hedge   270
Swap ineffectiveness 0  
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss 0 0
Unrealized losses included in accumulated other comprehensive loss 0 0
Fair value of end of period $ 0 $ 0