INCOME TAXES (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Current deferred tax assets:
Allowance for doubtful accounts and other reserves	$ 0	$ 72
Accrued expenses	0	5,165
Current deferred tax liabilities:
Prepaid expenses	0	(250)
Current deferred tax assets, net	0	4,987
Non-current deferred tax assets:
Net operating loss carryforwards	5,417	13,940
U.S. federal and state tax credits	2,577	1,202
Non-U.S. deferred tax assets	2,472	1,780
Share-based compensation	1,750	856
Accrued expenses	7,730	0
Non-current deferred tax liabilities:
Intangible assets	(4,508)	(5,302)
Depreciation	(7,446)	(11,878)
Other	(815)	(177)
Deferred tax assets net of deferred tax liabilities	7,177	421
Valuation allowance	(3,558)	(3,115)
Non-current deferred tax liabilities, net	0	2,694
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	3,619	0
Net deferred tax assets	3,619	2,293
Income Taxes
Increase in valuation allowance related to state and foreign losses	400
Undistributed earnings	63,500
Deferred tax liability that would be recognized if earnings were distributed	12,500
Gross amount of net operating losses available for carryover to future years	14,800	35,700
U.S. State
Non-current deferred tax assets:
Net operating loss carryforwards	1,600	1,800
Luxembourg
Non-current deferred tax assets:
Net operating loss carryforwards	2,300	1,700
U.S. Federal
Income Taxes
Net operating loss carryforwards related to stock options exercised, not recognized	13,600	13,600
U.S. State and U.S. Federal
Non-current deferred tax assets:
Net operating loss carryforwards	2,600	1,200
NCI
Income Taxes
Annual limit on use of operating loss carryforward	1,300
Gross amount of net operating losses available for carryover to future years	$ 10,100	$ 12,200