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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 |  |  |  |

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