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Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Taxes [Line Items] |  |  |
Net change in total deferred tax asset valuation allowance | $ (1,200) | $ (19,500) | $ 6,400
Cumulative undistributed earnings of foreign subsidiaries | 846,000 |  |
Chinese retroactive tax incentive | 0 | 0 | (1,227)
Income tax incentives | $ 6,716 | $ 13,693 | $ 12,721
Net impact of tax incentives, per diluted share | $ 0.13 | $ 0.26 | $ 0.23
Unrecognized tax benefits including interest and penalties | $ 7,900 |  |
Interest on unrecognized tax | 100 |  |
Accrued income tax penalties and interest on unrecognized tax benefits | 100 | $ 3,300 |
Interest and penalties included in income tax expense |  | 100 | $ 100
Decrease in unrecognized tax benefits reserve including penalties and interest due to expiration of statute of limitations | 8,300 |  |
Decrease in unrecognized tax benefits reserve due to expiration of statute of limitations | 5,079 | 1,653 | 0
U.S. Federal [Member] |  |  |
Income Taxes [Line Items] |  |  |
Net change in total deferred tax asset valuation allowance |  | 19,600 |
Operating loss carryforwards | 57,100 |  |
Tax credit carryforward | $ 6,700 |  |
U.S. Federal [Member] | Earliest Tax Year [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards expiration Year | 2024 |  |
U.S. Federal [Member] | Latest Tax Year [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards expiration Year | 2036 |  |
Tax credit carryforward expiration year | 2036 |  |
State and local [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards | $ 77,000 |  |
Tax credit carryforward | $ 2,000 |  |
State and local [Member] | Earliest Tax Year [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards expiration Year | 2017 |  |
State and local [Member] | Latest Tax Year [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards expiration Year | 2031 |  |
Tax credit carryforward expiration year | 2036 |  |
Foreign [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards | $ 34,700 |  |
Foreign operating loss with indefinited carry forward period | $ 24,600 |  |
Foreign [Member] | Latest Tax Year [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards expiration Year | 2026 |  |
China [Member] |  |  |
Income Taxes [Line Items] |  |  |
Income tax incentives | $ 1,302 | 5,347 | 2,800
China [Member] | Latest Tax Year [Member] |  |  |
Income Taxes [Line Items] |  |  |
Income tax holidays expiration date | 2018 |  |
Malaysia [Member} |  |  |
Income Taxes [Line Items] |  |  |
Income tax incentives | $ 2,346 | 2,075 | 2,299
Malaysia [Member} | Latest Tax Year [Member] |  |  |
Income Taxes [Line Items] |  |  |
Income tax holidays expiration date | 2021 |  |
Thailand [Member] |  |  |
Income Taxes [Line Items] |  |  |
Income tax incentives | $ 3,068 | $ 6,271 | $ 7,622
Thailand [Member] | Latest Tax Year [Member] |  |  |
Income Taxes [Line Items] |  |  |
Income tax holidays expiration date | 2028 |  |

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