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Income Taxes - Components of Income Tax Contingencies (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Beginning unrecognized tax benefit | $ 0 | $ 0 | $ 0
Additions for tax positions of prior years | 616 | 0 | 0
Reductions for tax positions of prior years | 0 | 0 | 0
Lapse of statute of limitations | (122) | 0 | 0
Decrease due to settlement with taxing authorities | 0 | 0 | 0
Ending unrecognized tax benefit | $ 494 | $ 0 | $ 0

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=116821951&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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