INDEBTEDNESS (Details 2) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Long-term Debt, Gross	$ 143,750	$ 143,750
Current component of long-term borrowing, net of deferred financing costs	3,353	0
Deferred financing costs	(1,300)
Long-term borrowing, net of deferred financing costs and current borrowing component	69,946	$ 0
Long Term Debt Current [Member]
Long-term Debt, Gross	3,750
Deferred financing costs	(397)
Current component of long-term borrowing, net of deferred financing costs	3,353
Long term debt Noncurrent [Member]
Long-term Debt, Gross	71,250
Deferred financing costs	(1,304)
Long-term borrowing, net of deferred financing costs and current borrowing component	$ 69,946