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Schedule II Valuation and Qualifying (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Valuation Allowance of Deferred Tax Assets |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | $ 178,731 | $ 231,294 | $ 37,243
Charged (Credited) to Expenses | (58,223) | (52,563) | (63,346)
Charged (Credited) to Other Accounts |  |  | 257,397
Balance at End of Year | 120,508 | 178,731 | 231,294
Allowance for Credit Losses of Accounts Receivable and Unbilled Contract Receivables |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 1,108 | 3,031 | 2,056
Charged (Credited) to Expenses | (395) | (1,923) | 975
Balance at End of Year | $ 713 | $ 1,108 | $ 3,031

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: 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(Column B)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 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(Column E)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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