INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Net foreign operating loss carryforward	$ 8,162	$ 6,932
Inventory differences	1,044	2,337
Equity compensation	704	836
Investment in subsidiaries	903	935
Restructuring	2,166	1,265
Other, net	499	418
Gross deferred tax assets	13,478	12,723
Less valuation allowances	(9,357)	(3,032)
Total deferred tax assets	4,121	9,691
Deferred tax liabilities:
Purchased intangible assets	(4,821)	(9,813)
Depreciation and amortization	(1,322)	(2,476)
Other, net	(97)	(220)
Total deferred tax liabilities	(6,240)	(12,509)
Net deferred tax liabilities	$ (2,119)	$ (2,818)