STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands			5 Months Ended	12 Months Ended			17 Months Ended	29 Months Ended
	Jun. 24, 2016	Mar. 25, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2017	Jul. 30, 2015
Cash dividend (in dollars per share)	$ 0.05	$ 0.05			$ 0.10
Stock Repurchase Program, Authorized Amount									$ 10,000
Stock Repurchased During Period, Shares			527,634				2,989,127	3,639,405
Payments for Repurchase of Common Stock			$ 1,386	$ 858	$ 5,127	$ 1,386	$ 6,513	$ 7,370
Private Transaction Repurchases [Member]
Treasury Stock, Value, Acquired, Cost Method				$ 1,980
Treasury Stock Acquired, Average Cost Per Share				$ 1.80
Treasury Stock, Shares, Acquired				1,100,000
Open Market Repurchases [Member]
Stock Repurchased During Period, Shares				650,278	1,361,493
Payments for Repurchase of Common Stock				$ 858
Treasury Stock, Value, Acquired, Cost Method					$ 3,147
Retained Earnings
Dividends, Common Stock, Cash					$ 3,401