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Fair Value Measurements - Changes in Level 3 (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
States and political subdivisions |  |
Changes in Level 3 |  |
Beginning balance | $ 15,236 | $ 4,319
Total gains or losses |  |
Included in earnings (or changes in net assets) |  | (6)
Included in other comprehensive income (loss) | (1,562) | 735
Purchases, issuances, sales, and settlements |  |
Purchases |  | 220
Settlements | (521) | (277)
Ending balance | 13,088 | 4,991
Changes in Level 3 (liabilities) |  |
Included in earnings (or changes in net assets) | (65) |
Mortgage Servicing Rights [Member] |  |
Changes in Level 3 |  |
Beginning balance | 7,097 | 4,224
Total gains or losses |  |
Included in earnings (or changes in net assets) |  | 734
Purchases, issuances, sales, and settlements |  |
Issuances | 565 | 963
Settlements | (570) | (654)
Ending balance | 10,722 | $ 5,267
Changes in Level 3 (liabilities) |  |
Included in earnings (or changes in net assets) | $ 3,630 |

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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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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) 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)(1a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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