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Investment Securities - Unrealized Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Investment Holdings [Line Items] |  |
Fair Value, Less than 12 Months | $ 334,687 | $ 21,668
Unrealized Losses, Less than 12 Months | (4,435) | (256)
Fair Value, 12 Months or Longer | 32,267 | 37,362
Unrealized Losses, 12 Months or Longer | (403) | (297)
Fair Value, Total | 366,954 | 59,030
Unrealized Losses, Total | (4,838) | (553)
U.S. government and agency securities |  |
Investment Holdings [Line Items] |  |
Fair Value, Less than 12 Months | 14,828 |
Unrealized Losses, Less than 12 Months | (176) |
Fair Value, 12 Months or Longer | 0 |
Unrealized Losses, 12 Months or Longer | 0 |
Fair Value, Total | 14,828 |
Unrealized Losses, Total | (176) |
Municipal securities |  |
Investment Holdings [Line Items] |  |
Fair Value, Less than 12 Months | 29,774 | 10,264
Unrealized Losses, Less than 12 Months | (619) | (227)
Fair Value, 12 Months or Longer | 9,351 | 0
Unrealized Losses, 12 Months or Longer | (235) | 0
Fair Value, Total | 39,125 | 10,264
Unrealized Losses, Total | (854) | (227)
Residential CMO and MBS |  |
Investment Holdings [Line Items] |  |
Fair Value, Less than 12 Months | 204,039 | 0
Unrealized Losses, Less than 12 Months | (2,470) | 0
Fair Value, 12 Months or Longer | 19,862 | 25,293
Unrealized Losses, 12 Months or Longer | (123) | (209)
Fair Value, Total | 223,901 | 25,293
Unrealized Losses, Total | (2,593) | (209)
Commercial CMO and MBS |  |
Investment Holdings [Line Items] |  |
Fair Value, Less than 12 Months | 83,283 | 11,404
Unrealized Losses, Less than 12 Months | (1,161) | (29)
Fair Value, 12 Months or Longer | 1,936 | 7,499
Unrealized Losses, 12 Months or Longer | (38) | (61)
Fair Value, Total | 85,219 | 18,903
Unrealized Losses, Total | (1,199) | (90)
Other asset-backed securities |  |
Investment Holdings [Line Items] |  |
Fair Value, Less than 12 Months | 2,763 | 0
Unrealized Losses, Less than 12 Months | (9) | 0
Fair Value, 12 Months or Longer | 1,118 | 4,570
Unrealized Losses, 12 Months or Longer | (7) | (27)
Fair Value, Total | 3,881 | 4,570
Unrealized Losses, Total | $ (16) | $ (27)

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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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 + Details
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