XML 64 R51.htm IDEA: XBRL DOCUMENT v3.4.0.3
FAIR VALUE MEASUREMENTS (Details) - Significant unobservable inputs, Level 3 - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt at fixed interest rate $ 346,114 $ 345,984
Debt at variable interest rate 737,997 619,341
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt at fixed interest rate 204,750 213,500
Debt at variable interest rate $ 440,250 $ 388,380