Income Taxes (Additional Information) (Details) - USD ($) $ in Thousands			12 Months Ended
	Dec. 22, 2017	Dec. 21, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016	Dec. 31, 2014
Income Tax Examination [Line Items]
Tax loss and credit carryforwards			$ 7,905	$ 7,146
Deferred tax asset valuation allowance			8,754	$ 6,388	$ 6,202		$ 7,691
Tax credit carryforwards, research			2,300
Tax credit carryforwards, AMT			$ 500
Effective income tax rate			39.50%	41.30%
Effective income tax rate, excluding the impact of U.S. tax reform			29.20%
Deferred tax liabilities, undistributed foreign earnings						$ 6,100
Current foreign tax expense (benefit)			$ 27,418	$ 24,537	15,192
Statutory tax rate	21.00%	35.00%
Provisional income tax expense (benefit)			13,700
Change in tax rate, deferred tax asset, provisional income tax expense			1,700
Transition tax for accumulated foreign earnings, provisional liability			12,000
Undistributed earnings of foreign subsidiaries			314,800
Unrecognized tax benefits that would impact effective tax rate			10,600
Unrecognized tax benefits that would result in adjustments to other tax accounts			4,000
Unrecognized tax benefits, income tax penalties and interest accrued			600	400
Income tax examination, interest expense			200	900	$ 100
Minimum amount of unrecognized tax benefits that could be recognized over next 12 months			8,100
Arizona
Income Tax Examination [Line Items]
Deferred tax asset valuation allowance				7,600
State and Local Jurisdiction
Income Tax Examination [Line Items]
Deferred tax asset valuation allowance			8,754	$ 6,388
Minimum
Income Tax Examination [Line Items]
State operating loss carryforwards			400
Minimum | Arizona
Income Tax Examination [Line Items]
Tax loss and credit carryforwards			8,600
Maximum
Income Tax Examination [Line Items]
State operating loss carryforwards			6,600
China
Income Tax Examination [Line Items]
Current foreign tax expense (benefit)			$ 6,300