SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Correction of Immaterial Errors on Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories, net	$ 25,606		$ 24,045	$ 24,337
Property and equipment, net	30,975			36,141
Assets	691,115			683,606
Deferred tax liability, net	16,290		$ 19,042	19,367
Liabilities	394,863			376,088
Stockholders' Equity Attributable to Parent	296,252			307,518
Scenario, Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories, net				20,496
Property and equipment, net				43,283
Assets				686,907
Deferred tax liability, net				19,174
Liabilities				375,895
Stockholders' Equity Attributable to Parent				311,012
Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories, net				3,841
Property and equipment, net				(7,142)
Assets				(3,301)
Deferred tax liability, net				193
Liabilities				193
Stockholders' Equity Attributable to Parent				(3,494)
Accumulated Deficit
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Stockholders' Equity Attributable to Parent	$ (131,221)			(115,433)
Accumulated Deficit | Scenario, Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Stockholders' Equity Attributable to Parent				(111,939)
Accumulated Deficit | Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Stockholders' Equity Attributable to Parent		$ 3,800		$ (3,494)