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Debt Securities Available-for-Sale - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) security loan | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) security loan | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Debt securities, available-for-sale, restricted | $ 581,600 |  | $ 581,600 |  | $ 522,100
Proceeds from sales and calls of debt securities available-for-sale | 0 | $ 89,600 | 41,464 | $ 95,472 |
Debt securities, available-for-sale, realized gain (loss) | 0 |  |  |  |
Debt securities, available-for-sale, realized gain |  | 509 | 264 | 606 |
Debt securities, available-for-sale, realized loss |  | 0 | 0 | 0 |
Debt securities, trading, realized gain (loss) | (1,600) | $ 807 | (2,400) | $ 1,200 |
Debt securities available-for-sale, allowance for credit loss | 0 |  | 0 |  | 0
Accrued interest receivable associated with debt securities available-for-sale | $ 2,600 |  | $ 2,600 |  | $ 2,500
Real Estate Mortgage Investment Conduits (REMICs) | GSE |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Number of debt securities, unrealized loss position longer than 12 months | loan | 1 |  | 1 |  |
Number of debt securities, unrealized loss position less than 12 months | security | 4 |  | 4 |  |
Real Estate Mortgage Investment Conduits (REMICs) | GSE | Pass Through |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Number of debt securities, unrealized loss position longer than 12 months | security | 15 |  | 15 |  |
Number of debt securities, unrealized loss position less than 12 months | security | 89 |  | 89 |  |
Real Estate Mortgage Investment Conduits (REMICs) | GSE | Non Pass Through |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Number of debt securities, unrealized loss position longer than 12 months | loan | 26 |  | 26 |  |
Number of debt securities, unrealized loss position less than 12 months | security | 61 |  | 61 |  |
Real Estate Mortgage Investment Conduits (REMICs) | Municipal bonds |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Number of debt securities, unrealized loss position longer than 12 months | loan | 2 |  | 2 |  |
Number of debt securities, unrealized loss position less than 12 months | security | 26 |  | 26 |  |

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- Definition Amount, after allowance for credit loss, of accrued interest on 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 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 3A -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL120267853-210455 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2A -URI https://asc.fasb.org/extlink&oid=126970911&loc=SL121698322-111563 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 3B -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL120267856-210455 + Details
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- Definition Amount of allowance for credit loss on 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 326 -SubTopic 30 -Section 50 -Paragraph 9 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aaa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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