RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax benefit	$ (1,176)	$ 664	$ 2,880	$ 459
Income tax benefit recognized as an operating activity			0	619
Income tax expense recognized as a financing activity			0	(619)
Non-current deferred income tax liabilities	12,102		12,102		$ 9,513
Cash classified to restricted cash	3,614		3,614		0
ASU 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax benefit	(200)		(300)
Income tax benefit recognized as an operating activity			300
Income tax expense recognized as a financing activity			600	$ 200
ASU 2015-17 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Non-current deferred income tax liabilities					$ 9,513
ASU 2016-18 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash classified to restricted cash	$ 3,600		$ 3,600