Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Accrued Liabilities and allowances	$ 27,170	$ 34,389
Tax credit carry-forwards	29,297	25,858
Stock-based compensation	15,628	19,530
Deferred Tax Assets, Inventory	10,494	10,565
Deferred Tax Assets, Deferred Revenue	6,184	4,608
Deferred Tax Assets, Other	1,373	4,334
Deferred Tax Assets, Gross	90,146	99,284
Valuation allowance	(2,607)	(13,277)
Net deferred tax assets	87,539	86,007
Deferred tax liabilities - Intangibles	(26,996)	(34,737)
Deferred tax liabilities - Depreciation	(6,612)	(4,553)
Other deferred tax liabilities	(2,125)	(1,808)
Total deferred tax liabilities	(35,733)	(41,098)
Deferred income taxes	3,623	9,193
Total deferred tax assets, net	51,806	44,909
Cumulative amount of earnings upon which United States income taxes have not been provided	722,000
UNITED STATES FEDERAL
Income Taxes [Line Items]
Operating loss carry-forwards	4,600
Foreign
Income Taxes [Line Items]
Operating loss carry-forwards	71,100
State taxes
Income Taxes [Line Items]
Operating loss carry-forwards	39,200
Deferred taxes balance sheet classification [Member]
Income Taxes [Line Items]
Deferred tax assets - non-current	55,429	54,102
Deferred tax liabilities - non-current	(3,623)	(9,193)
Valuation allowance	(2,607)	(13,277)
Total deferred tax assets, net	$ 51,806	$ 44,909
Minimum [Member] | UNITED STATES FEDERAL
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2019
Minimum [Member] | Foreign
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2018
Minimum [Member] | State taxes
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2016
Maximum [Member] | UNITED STATES FEDERAL
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2031
Maximum [Member] | Foreign
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2033
Maximum [Member] | State taxes
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2033