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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2021
Valuation And Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts | SCHEDULE II VALUATION AND Q UALIFYING ACCOUNTS
|  | Valuation and Qualifying Accounts |
|  | Balance at Beginning of Period |  |  | Additions Charged to Expenses or Other Accounts |  |  | Deductions Credited to Expenses or Other Accounts |  |  | Balance at End of Period |
|  | (in thousands) |
Allowance for credit losses |  |  |  |  |  |  |  |  |  |  |  |
Year Ended December 31, 2021 |  | $ | 50 |  |  | $ | — |  |  | $ | — |  |  | $ | 50 |
Year Ended December 31, 2020 |  | $ | 129 |  |  | $ | — |  |  | $ | (79 | ) |  | $ | 50 |
Year Ended December 31, 2019 |  | $ | 168 |  |  | $ | — |  |  | $ | (39 | ) |  | $ | 129 |
Deferred tax valuation allowance |  |  |  |  |  |  |  |  |  |  |  |
Year Ended December 31, 2021 |  | $ | 55,951 |  |  | $ | 13,363 |  |  | $ | — |  |  | $ | 69,314 |
Year Ended December 31, 2020 |  | $ | 45,494 |  |  | $ | 10,457 |  |  | $ | — |  |  | $ | 55,951 |
Year Ended December 31, 2019 |  | $ | 45,496 |  |  | $ | — |  |  | $ | (2 | ) |  | $ | 45,494 |

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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