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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Valuation Allowance [Line Items] |  |  |
Deferred Tax Assets, Gross | $ 165,600 |  |
Deferred Tax Assets, Valuation Allowance | 179,900 |  |
Deferred Tax Liabilities, Net | 14,300 |  |
Provision for (benefit from) income taxes | 309 | $ (3,229) |
Unrecognized tax benefits | 24,500 |  | $ 23,500
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit | 2,300 |  |
Foreign Tax Authority [Member] |  |  |
Valuation Allowance [Line Items] |  |  |
Income Taxes Paid | 4,300 | $ 6,100 |
Long Term Deferred Tax Assets [Member] |  |  |
Valuation Allowance [Line Items] |  |  |
Unrecognized tax benefits | 22,200 |  | 21,400
Long Term Income Taxes Payable [Member] |  |  |
Valuation Allowance [Line Items] |  |  |
Unrecognized tax benefits | $ 2,300 |  | $ 2,100

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324 + Details
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