Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Accrued Liabilities and allowances	$ 28,909	$ 27,170
Tax credit carry-forwards	25,522	29,297
Stock-based compensation	17,204	15,628
Deferred Tax Assets, Inventory	11,337	10,494
Deferred Tax Assets, Deferred Revenue	4,758	6,184
Deferred Tax Assets, Other	917	1,373
Deferred Tax Assets, Gross	88,647	90,146
Valuation allowance	(2,924)	(2,607)
Net deferred tax assets	85,723	87,539
Deferred tax liabilities - Intangibles	(33,564)	(26,996)
Deferred tax liabilities - Depreciation	(7,212)	(6,612)
Other deferred tax liabilities	(2,035)	(2,125)
Total deferred tax liabilities	(42,811)	(35,733)
Total deferred tax assets, net	42,912	51,806
Discrete tax expense	39,600
Cumulative amount of earnings upon which United States income taxes have not been provided	785,000
UNITED STATES FEDERAL
Income Taxes [Line Items]
Operating loss carry-forwards	4,200
Foreign
Income Taxes [Line Items]
Operating loss carry-forwards	74,300
State taxes
Income Taxes [Line Items]
Operating loss carry-forwards	27,800
Deferred taxes balance sheet classification [Member]
Income Taxes [Line Items]
Deferred tax assets - non-current	45,243	55,429
Deferred tax liabilities - non-current	(2,331)	(3,623)
Valuation allowance	(2,924)	(2,607)
Total deferred tax assets, net	$ 42,912	$ 51,806
Minimum | UNITED STATES FEDERAL
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2019
Minimum | Foreign
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2018
Minimum | State taxes
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2017
Maximum | UNITED STATES FEDERAL
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2031
Maximum | Foreign
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2033
Maximum | State taxes
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2033