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Fair Value Measurements - Debt Securities Available -for-sale (Details) - Items measured on a recurring basis - Level 3 Inputs - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Equity Investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | $ 2,540 | $ 0
Purchases | 0 | 2,000
Total gains included in earnings | 178 | 540
Maturities | 0 | 0
Ending balance | 2,718 | 2,540
Debt Securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | $ 0 | 25
Purchases |  | 2,377
Total gains included in earnings |  | 0
Maturities |  | (2,402)
Ending balance |  | $ 0

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- Definition Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Maturities + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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