INDEBTEDNESS (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total long-term debt	$ 274,000	$ 258,000
Less: Current maturities of long-term debt	10,000	10,000
Long-term debt	264,000	248,000
Balance of revolving credit facility
Debt Instrument [Line Items]
Total long-term debt	84,000	63,000
Balance of term loan
Debt Instrument [Line Items]
Total long-term debt	$ 190,000	$ 195,000