| **Transfers Accounted for as Secured Borrowings (Details) - U.S. Government-sponsored mortgage-backed securities - USD ($) $ in Thousands** | Mar. 31, 2022 | Dec. 31, 2021 |
|---------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Assets Sold under Agreements to Repurchase [Line Items]**                                                                                 |          |          |
| Remaining Contractual Maturity of the Agreements                                                                                            | $ 169,697     | $ 181,577     |
| Overnight and Continuous                                                                                                                    |          |          |
| **Assets Sold under Agreements to Repurchase [Line Items]**                                                                                 |          |          |
| Remaining Contractual Maturity of the Agreements                                                                                            | 169,697       | 181,577       |
| Up to 30 Days                                                                                                                               |          |          |
| **Assets Sold under Agreements to Repurchase [Line Items]**                                                                                 |          |          |
| Remaining Contractual Maturity of the Agreements                                                                                            | 0             | 0             |
| 30-90 Days                                                                                                                                  |          |          |
| **Assets Sold under Agreements to Repurchase [Line Items]**                                                                                 |          |          |
| Remaining Contractual Maturity of the Agreements                                                                                            | 0             | 0             |
| Greater Than 90 Days                                                                                                                        |          |          |
| **Assets Sold under Agreements to Repurchase [Line Items]**                                                                                 |          |          |
| Remaining Contractual Maturity of the Agreements                                                                                            | $ 0           | $ 0           |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying value, as of the balance sheet date, of securities sold under agreements to repurchase where the transferor maintains effective control over the assets, accounting for them as secured debt.
+ References
Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729
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| X                                                                                                                                                                                                      |
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| X                                                                                                                                                                                        |
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| X                                                                                                                                                                                         |
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| X                                                                                                                                                                                         |
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| X                                                                                                                                                                                         |
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