Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	0.00%	0.00%	(6.40%)
Accrued Liabilities and allowances	$ 20,425	$ 28,909
Tax credit carry-forwards	30,979	25,522
Stock-based compensation	11,715	17,204
Deferred Tax Assets, Inventory	8,555	11,337
Deferred Tax Assets, Deferred Revenue	2,732	4,758
Deferred Tax Assets, Other	2,527	917
Deferred Tax Assets, Gross	76,933	88,647
Valuation allowance	(3,392)	(2,924)
Net deferred tax assets	73,541	85,723
Deferred tax liabilities - Intangibles	(29,117)	(33,564)
Deferred tax liabilities - Depreciation	(16,499)	(7,212)
Deferred Tax Liabilities, Undistributed Foreign Earnings	15,100	0
Other deferred tax liabilities	(4,320)	(2,035)
Total deferred tax liabilities	(65,036)	(42,811)
Total deferred tax assets, net	8,505	42,912
Discrete tax expense	94,400	39,600
Undistributed Earnings of Foreign Subsidiaries		(1,000,000)
Transition [Member]
Income Taxes [Line Items]
Discrete tax expense	66,500
remeasurement new tax rate [Member]
Income Taxes [Line Items]
Discrete tax expense	12,800
State and Foreign on undistributed foreign earnings [Member]
Income Taxes [Line Items]
Discrete tax expense	15,100
UNITED STATES FEDERAL
Income Taxes [Line Items]
Operating loss carry-forwards	3,900
Foreign
Income Taxes [Line Items]
Operating loss carry-forwards	111,100
State taxes
Income Taxes [Line Items]
Operating loss carry-forwards	900
Deferred taxes balance sheet classification [Member]
Income Taxes [Line Items]
Deferred tax assets - non-current	21,001	45,243
Deferred tax liabilities - non-current	(12,496)	(2,331)
Total deferred tax assets, net	$ 8,505	$ 42,912
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	2023
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	2036
Maximum | State taxes
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Year	2036