DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
ASU 2016-09 [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Cumulative effect adjustment		$ 0
ASU 2016-09 [Member] | Retained Earnings [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Cumulative effect adjustment		1,696
ASU 2016-09 [Member] | Additional Paid-in Capital [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Cumulative effect adjustment		(1,696)
ASU 2015-03 [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Deferred financing costs	$ 2,300	$ 2,600
ASU 2014-09 [Member] | Retained Earnings [Member] | Plan [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Cumulative effect adjustment	$ 2,800