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Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2021
Income Tax Contingency [Line Items] |  |
Deferred income tax assets, net | $ 25,826 | $ 26,739
Valuation allowance | 22,100 | $ 23,100
CARES Act |  |
Income Tax Contingency [Line Items] |  |
Deferred payroll taxes, CARES Act | 2,100 |
Tax credits | 1,300 |
Alternative minimum tax credits received | $ 1,300 |

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- Definition Amount 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 attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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