SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		$ 1,989	$ 941	$ 743
Charged to costs and expenses		295	1,434	325
Charged to other accounts	[1]	303	0	50
Deductions	[2]	(840)	(386)	(177)
Balance at end of period		1,747	1,989	941
Allowance for Excess and Obsolete Inventory [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		6,809	3,941	5,490
Charged to costs and expenses		2,186	4,438	(85)
Charged to other accounts	[1]	(59)	(1)	7
Deductions	[2]	(3,668)	(1,569)	(1,471)
Balance at end of period		5,268	6,809	3,941
Deferred Tax Assets - Valuation Allowances [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		6,692	1,955	1,874
Charged to costs and expenses		456	4,766	308
Charged to other accounts	[1]	0	0	0
Deductions	[2]	(513)	(29)	(227)
Balance at end of period		$ 6,635	$ 6,692	$ 1,955

[1] Includes foreign currency translation adjustments

[2] Write offs