SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Antidilutive Securities Excluded From Computation Of Earnings Per Share (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Employee stock awards	98
New accounting pronouncements
Current deferred tax assets			$ 7,909
ASU 2015-17 | New Accounting Pronouncement, Early Adoption, Effect | Reclassification
New accounting pronouncements
Current deferred tax assets		$ (7,909)
Non-current liabilities		$ 7,909