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Fair Value Measurements - Quantitative and Qualitative Information (Details) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
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Quantitative information about Level 3 fair value measurements |  |
Mortgage servicing rights, fair value | $ 7,097,000 | $ 4,224,000
Securities available-for-sale, at fair value | 1,692,488,000 | 496,178,000
Fair Value, Inputs, Level 3 [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Mortgage servicing rights, fair value | 7,097,000 | 4,224,000
Securities available-for-sale, at fair value | 14,092,000 | 4,319,000
States and political subdivisions |  |
Quantitative information about Level 3 fair value measurements |  |
Securities available-for-sale, at fair value | 256,465,000 | 249,259,000
States and political subdivisions | Fair Value, Inputs, Level 3 [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Securities available-for-sale, at fair value | 14,100,000 | 4,300,000
Collateralized loan obligations |  |
Quantitative information about Level 3 fair value measurements |  |
Securities available-for-sale, at fair value | 672,967,000 | 56,585,000
Fair Value, Measurements, Recurring [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Mortgage servicing rights, fair value | 7,097,000 | 4,224,000
Securities available-for-sale, at fair value | 4,737,000 |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Mortgage servicing rights, fair value | 7,097,000 | 4,224,000
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Securities available-for-sale, at fair value | 3,494,000 |
Fair Value, Measurements, Recurring [Member] | States and political subdivisions |  |
Quantitative information about Level 3 fair value measurements |  |
Securities available-for-sale, at fair value | 256,465,000 | 249,259,000
Fair Value, Measurements, Recurring [Member] | States and political subdivisions | Fair Value, Inputs, Level 3 [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Securities available-for-sale, at fair value | 14,092,000 | 4,319,000
Fair Value, Measurements, Recurring [Member] | Collateralized loan obligations |  |
Quantitative information about Level 3 fair value measurements |  |
Securities available-for-sale, at fair value | 672,967,000 | 56,585,000
Fair Value, Measurements, Recurring [Member] | Measurement Input, Discount Rate | Mortgage Servicing Rights [Member] | Discounted Cash Flow Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Mortgage servicing rights, fair value | $ 7,097,000 | $ 4,224,000
Fair Value, Measurements, Recurring [Member] | Measurement Input, Discount Rate | Mortgage Servicing Rights [Member] | Discounted Cash Flow Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum |  |
Quantitative information about Level 3 fair value measurements |  |
Servicing Asset, Measurement Input | 11.0 | 11.0
Fair Value, Measurements, Recurring [Member] | Measurement Input, Discount Rate | Mortgage Servicing Rights [Member] | Discounted Cash Flow Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum |  |
Quantitative information about Level 3 fair value measurements |  |
Servicing Asset, Measurement Input | 15.0 | 15.0
Fair Value, Measurements, Recurring [Member] | Measurement Input, Discount Rate | Mortgage Servicing Rights [Member] | Discounted Cash Flow Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Servicing Asset, Measurement Input | 11.0 | 11.0
Fair Value, Measurements, Recurring [Member] | Measurement Input, Constant Prepayment Rate | Mortgage Servicing Rights [Member] | Discounted Cash Flow Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum |  |
Quantitative information about Level 3 fair value measurements |  |
Servicing Asset, Measurement Input | 0.0 | 5.5
Fair Value, Measurements, Recurring [Member] | Measurement Input, Constant Prepayment Rate | Mortgage Servicing Rights [Member] | Discounted Cash Flow Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum |  |
Quantitative information about Level 3 fair value measurements |  |
Servicing Asset, Measurement Input | 36.6 | 59.1
Fair Value, Measurements, Recurring [Member] | Measurement Input, Constant Prepayment Rate | Mortgage Servicing Rights [Member] | Discounted Cash Flow Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] |  |
Quantitative information about Level 3 fair value measurements |  |
Servicing Asset, Measurement Input | 11.9 | 19.5

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
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