Income Taxes, Tax Carryforward and Other (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Components of deferred income tax assets and liabilities [Abstract]
Loss carryforwards	$ 39,217	$ 21,092
AMT credits	112	112
Foreign tax credits	7,066	0
Accrued employment expenses	1,785	1,256
Amortization and write-offs	9,480	8,883
Capitalized R&D costs	2,663	2,933
Deferred revenues	0	84
Depreciation	2,022	4,360
Doubtful accounts	4,177	3,499
Inventory reserves	1,030	822
Tax on undistributed earnings	(3,333)	0
Other accruals and reserves	324	228
Return allowances	2,787	5,660
Translation adjustments	(44)	61
Gross deferred tax asset	67,286	48,990
Less: valuation allowance	(65,957)	(11,910)
Net deferred tax asset	1,329	37,080
Among current assets	762	13,041
Among other non-current assets	$ 567	$ 24,039