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Securities - Available for Sale Securities With Gross Unrealized Losses and Their Fair Value (Details) $ in Thousands | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
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Held-to-maturity securities have been in a continuous unrealized loss position, number of positions | 1 |
Held-to-maturity securities have been in a continuous unrealized loss position, fair value | $ 19,908 |
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss | 265 |
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value | 19,908 |
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 265 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 |
Securities have been in a continuous unrealized loss position, number of positions | 57 | 37
Securities have been in a continuous unrealized loss position, fair value | $ 423,234 | $ 290,820
Securities have been in a continuous unrealized loss position, unrealized losses | 7,828 | 7,766
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 287,669 | 76,729
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 6,484 | 186
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 135,565 | 214,091
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 1,344 | $ 7,580
US States and Political Subdivisions Debt Securities [Member] |  |
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions | 1 |
Held-to-maturity securities have been in a continuous unrealized loss position, fair value | $ 19,908 |
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss | 265 |
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value | 19,908 |
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 265 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 |
US Government Agencies Debt Securities [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 2 | 1
Securities have been in a continuous unrealized loss position, fair value | $ 6,205 | $ 4,988
Securities have been in a continuous unrealized loss position, unrealized losses | 34 | 1
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 6,205 | 4,988
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 34 | 1
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 | 0
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 | $ 0
Corporate Debt Securities [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 8 | 14
Securities have been in a continuous unrealized loss position, fair value | $ 79,061 | $ 113,734
Securities have been in a continuous unrealized loss position, unrealized losses | 940 | 6,266
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 0
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | 0
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 79,061 | 113,734
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 940 | $ 6,266
Collateralized Loan Obligations [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 8 | 13
Securities have been in a continuous unrealized loss position, fair value | $ 56,504 | $ 99,199
Securities have been in a continuous unrealized loss position, unrealized losses | 404 | 1,363
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 7,441
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | 52
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 56,504 | 91,758
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 404 | $ 1,311
Other Debt Obligations [Member] |  |
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions | 1 |
Held-to-maturity securities have been in a continuous unrealized loss position, fair value | $ 19,908 |
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss | 265 |
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value | 19,908 |
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 265 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 |
Securities have been in a continuous unrealized loss position, number of positions | 18 | 28
Securities have been in a continuous unrealized loss position, fair value | $ 141,770 | $ 217,921
Securities have been in a continuous unrealized loss position, unrealized losses | 1,378 | 7,630
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 6,205 | 12,429
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 34 | 53
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 135,565 | 205,492
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 1,344 | $ 7,577
Collateralized Mortgage Backed Securities [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 39 | 9
Securities have been in a continuous unrealized loss position, fair value | $ 281,464 | $ 72,899
Securities have been in a continuous unrealized loss position, unrealized losses | 6,450 | 136
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 281,464 | 64,300
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 6,450 | 133
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 | 8,599
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 | $ 3
REMIC and CMO [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 8 |
Securities have been in a continuous unrealized loss position, fair value | $ 56,685 |
Securities have been in a continuous unrealized loss position, unrealized losses | 1,260 |
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 56,685 |
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 1,260 |
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 |
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 |
GNMA [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 2 | 1
Securities have been in a continuous unrealized loss position, fair value | $ 10,932 | $ 10,341
Securities have been in a continuous unrealized loss position, unrealized losses | 312 | 22
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 10,932 | 10,341
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 312 | 22
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 | 0
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 | $ 0
FNMA [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 16 | 5
Securities have been in a continuous unrealized loss position, fair value | $ 116,082 | $ 32,463
Securities have been in a continuous unrealized loss position, unrealized losses | 2,196 | 31
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 116,082 | 23,864
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 2,196 | 28
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 | 8,599
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 | $ 3
FHLMC [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 13 | 3
Securities have been in a continuous unrealized loss position, fair value | $ 97,765 | $ 30,095
Securities have been in a continuous unrealized loss position, unrealized losses | 2,682 | 83
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 97,765 | 30,095
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 2,682 | 83
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 0 | 0
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 0 | $ 0

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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=118955579&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=118939692&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=118942371&loc=SL82922954-210456 + Details
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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 unrealized loss position without allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922888-210455 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=118942371&loc=SL82922954-210456 + Details
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