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Income Taxes - (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) subsidiary | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Current [Abstract] |  |  |
State | $ 4 | $ 2 | $ 2
Foreign | 729 | 529 | 213
Total current | 733 | 531 | 215
Total net provision for income taxes | $ 733 | $ 531 | $ 215
Reconciliation of effective income tax rates and U.S. statutory federal income tax rate [Abstract] |  |  |
Statutory federal income tax rate (as a percent) | 35.00% | 35.00% | 35.00%
State income taxes, net of federal tax benefits (as a percent) |  |  | (0.20%)
Change in valuation allowance (as a percent) | (7.00%) | (46.10%) | (106.30%)
Stock-based compensation (as a percent) | 1.20% | (9.40%) | (26.10%)
Foreign tax rate differential (as a percent) | (12.10%) | 29.30% | 104.20%
Foreign income tax incentive (as a percent) | (13.50%) | 24.10% | 64.70%
Dividend from unconsolidated affiliates (as a percent) | 1.50% |  |
Dividend from unconsolidated affiliates (as a percent) |  | (57.80%) | (169.80%)
Tax effect in equity method loss or gain from unconsolidated affiliates (as a percent) | 8.20% | 1.10% | 45.60%
Others (as a percent) | (0.20%) | (0.10%) | 14.40%
Effective tax rate (as a percent) | 13.10% | (23.90%) | (38.50%)
Deferred tax assets [Abstract] |  |  |
Net operating loss | $ 62,459 | $ 60,538 |
Accruals and reserves not yet deductible | 4,520 | 3,723 |
Credits | 1,488 | 1,488 |
Deferred tax assets, gross | 68,467 | 65,749 |
Net deferred tax assets | 68,467 | 65,749 |
Valuation allowance | (68,467) | (65,749) |
Reconciliation of beginning and ending amount of the gross unrecognized tax benefits [Roll Forward] |  |  |
Gross unrecognized tax benefits beginning balance | 14,557 | 16,403 | $ 16,403
Decrease related to lapse of statute of limitations |  | (1,846) |
Gross unrecognized tax benefits ending balance | 14,557 | 14,557 | 16,403
(Increase) and decrease in valuation allowance | 2,700 | 4,100 |
Non-U.S. income included in income (loss) before tax | 15,000 | 15,200 | 12,800
Unrecognized tax benefits interest and penalties | 0 |  |
Unrecognized tax benefits accrued interest and penalties | 0 |  |
Unrecognized tax liabilities of undistributed earnings of foreign subsidiaries | 95,300 |  |
Unrecognized tax benefit would favorably impact the effective tax rate in future periods if recognized | 14,600 |  |
Majority-Owned Subsidiaries [Member] |  |  |
Reconciliation of beginning and ending amount of the gross unrecognized tax benefits [Roll Forward] |  |  |
Restricted cash and investments | 22,600 |  |
Cash and investments not available for use | 16,600 |  |
Wholly Owned China Subsidiary |  |  |
Reconciliation of beginning and ending amount of the gross unrecognized tax benefits [Roll Forward] |  |  |
Restricted cash and investments | 14,500 |  |
Three Partially Owned Consolidated China Subsidiaries |  |  |
Reconciliation of beginning and ending amount of the gross unrecognized tax benefits [Roll Forward] |  |  |
Restricted cash and investments | $ 8,100 |  |
Number of partially owned subsidiaries | subsidiary | 3 |  |
Domestic Tax Authority |  |  |
Reconciliation of beginning and ending amount of the gross unrecognized tax benefits [Roll Forward] |  |  |
Operating loss carryforwards | $ 178,400 |  |
Tax credit carryforwards | 1,500 |  |
State |  |  |
Reconciliation of beginning and ending amount of the gross unrecognized tax benefits [Roll Forward] |  |  |
Operating loss carryforwards | $ 1,000 |  |
Foreign Tax Authority |  |  |
Reconciliation of beginning and ending amount of the gross unrecognized tax benefits [Roll Forward] |  |  |
EIT income tax rate (as a percent) | 25.00% |  |
Preferential tax rate (as a percent) | 15.00% |  |
Benefit from foreign tax rate | $ 489 | $ 354 | $ 143
Renewal Period For Favorable Tax Rate | 3 years |  |
Foreign Tax Authority | Wholly Owned China Subsidiary |  |  |
Reconciliation of beginning and ending amount of the gross unrecognized tax benefits [Roll Forward] |  |  |
Benefit from foreign tax rate | $ 200 |  |

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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330215-122817 + Details
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