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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Liability for unrecognized tax benefits | $ 7,032 |  |
Unrecognized tax benefits, income tax penalties and interest accrued | 567 |  |
Unrecognized tax benefits that would impact the effective tax rate | 6,863 |  |
Income Tax Expense (Benefit) | $ 1,077 | $ (584) |
Effective Income Tax Rate Reconciliation, Percent | 24.60% |  |
Federal Statutory Income Tax Rate, Historical |  |  | 35.00%
Tax Cuts and Jobs Act of 2017 Corporate Federal Tax Rate | 21.00% |  |
Minimum |  |  |
Income Tax Examination [Line Items] |  |  |
Income Tax Examination, Year under Examination | 2014 |  |
Maximum |  |  |
Income Tax Examination [Line Items] |  |  |
Income Tax Examination, Year under Examination | 2016 |  |

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- Definition Percentage 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 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 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)(2)) -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 -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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