Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets, Net	$ 23,408	$ 26,919
Defered Tax Liabilties, Net	26,465	21,112
Undistributed Earnings of Foreign Subsidiaries	210,000
Income Tax Reconciliation Change In Enacted Tax Rate	$ (3,118)	$ 18,388	$ 0
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate	35.00%
Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate	21.00%
U.S. Tax Reform Act	On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as U.S. Tax Reform. U.S. Tax Reform included multiple changes to the U.S. tax code with varying effects on the Company’s 2017 results, including, but not limited to, (i) a revaluation of the Company’s U.S. deferred tax assets and liabilities based upon the reduction of the U.S. federal statutory corporate income tax rate from 35% to 21% and (ii) implementation of a new system of taxation for non-U.S. earnings which eliminates U.S. federal income taxes on dividends from certain foreign subsidiaries and imposes a one-time transition tax on the deemed repatriation of undistributed earnings of certain foreign subsidiaries that is payable over eight years. U.S. Tax Reform also made changes to the U.S. tax code that have impacted 2018 and will impact future years, including, but not limited to, (i) reduction of the U.S. federal statutory corporate tax rate; (ii) elimination of the corporate alternative minimum tax; (iii) the creation of the base erosion anti-abuse tax, a new minimum tax; (iv) a general elimination of U.S. federal income taxes on dividends from foreign subsidiaries; (v) a new provision designed to tax global intangible low-taxed income (“GILTI”), which allows for the possibility of using foreign tax credits and a deduction of up to 50 percent to offset the income tax liability (subject to some limitations); (vi) a new limitation on deductible interest expense; (vii) the repeal of the U.S. production activity deduction; (viii) limitations on the deductibility of certain executive compensation; (ix) limitations on the use of foreign tax credits to reduce the U.S. income tax liability; (x) a reduction in the dividends received deduction from 70% to 50% (in the case of less-than-20%-owned subsidiaries) and from 80% to 65% (in the case of less-than-80%-owned subsidiaries); and (xi) limitations on net operating losses generated after December 31, 2017 to 80 percent of taxable income. Also, in 2017, the Securities and Exchange Commission issued guidance on accounting for the tax effects of U.S. Tax Reform and provided a one-year measurement period for companies to complete the accounting. The Company’s initial analysis of the impact of U.S. Tax Reform resulted in an incremental tax expense of $22.2 million recorded during the fourth quarter of 2017. U.S. Tax Reform reduced the U.S. federal statutory corporate tax rate from 35% to 21% effective January 1, 2018. Consequently, the Company recorded a decrease in U.S. net deferred tax assets of approximately $4.5 million with a corresponding net adjustment to deferred income tax expense during the fourth quarter of 2017. This initial estimate was not adjusted during 2018. The Transition Tax is a tax on previously untaxed accumulated and current earnings and profits of certain of the Company’s foreign subsidiaries as of either the November 2, 2017 or December 31, 2017 measurement date provided within U.S. Tax Reform. The Company made a reasonable estimate of its Transition Tax and recorded a gross provisional Transition Tax obligation during the fourth quarter of 2017 of $18.4 million, or $17.8 million, net of the impact of eliminating U.S. Federal income taxes on dividends from certain foreign subsidiaries received during 2017. Subsequent to numerous temporary regulations, notices, and other formal guidance published by the Internal Revenue Service (“IRS”), U.S. Treasury, and various state taxing authorities in 2018, the Company completed its accounting for the tax effects of U.S. Tax Reform as of December 22, 2018 and refined the total incremental tax expense related to U.S. Tax Reform to approximately $28.0 million. Based on proposed regulations published by the U.S. federal and state taxing authorities, the Company recorded a $2.5 million tax benefit to adjust its net Transition Tax to $15.3 million. The Company elected to pay its Transition Tax in installments over eight years as provided for in U.S. Tax Reform. In addition, the Company recorded deferred income tax expense of $0.3 million in 2018 related to the deductibility of certain executive compensation based on formal guidance issued by the IRS in 2018. As a result of the impacts from U.S. Tax Reform, the Company re-evaluated its global cash strategy resulting in a change to its indefinite reinvestment assertion attributable to a portion of its undistributed foreign earnings and recognized a deferred tax liability and corresponding deferred tax expense of $7.9 million, which primarily represents the Company’s estimate of the non-U.S. income taxes the Company will incur to ultimately remit those earnings to the U.S.
Domestic Country [Member]
Defered Tax Liabilties, Net	$ 2,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards	6,600
Operating Loss Carryforwards, Valuation Allowance	400
Foreign Tax Authority [Member] | Expiration In Next Year [Member]
Operating Loss Carryforwards	0
Foreign Tax Authority [Member] | Expiration In Year Two [Member]
Operating Loss Carryforwards	0
Foreign Tax Authority [Member] | Expiration In Year Three [Member]
Operating Loss Carryforwards	0
Foreign Tax Authority [Member] | Expiration In Year Four [Member]
Operating Loss Carryforwards	0
Foreign Tax Authority [Member] | Expiration In Year Five [Member]
Operating Loss Carryforwards	0
Foreign Tax Authority [Member] | Expiration In Year Six [Member]
Operating Loss Carryforwards	$ 600