INDEBTEDNESS (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Long-term debt
Long-term debt	$ 220,000	$ 220,000
Less: current maturities of long-term debt	10,000	10,000
Less: deferred financing fees, net	1,118	1,617
Long-term debt	208,882	208,383
Revolving credit facility
Long-term debt
Long-term debt	52,500	45,000
Term loan
Long-term debt
Long-term debt	$ 167,500	$ 175,000