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Investment Securities - Amortized Cost and Fair Values of Debt Securities Held to Maturity (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | $ 461,162 | $ 541,311
Gross Unrealized Gains | 0 | 3,768
Gross Unrealized Losses | (74,957) | (8,428)
Estimated Fair Value | 386,205 | 536,651
ERROR in label resolution. |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 1,000 | 1,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (40) | (3)
Estimated Fair Value | 960 | 997
US States and Political Subdivisions Debt Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 26,643 | 29,402
Gross Unrealized Gains | 0 | 414
Gross Unrealized Losses | (2,865) | (103)
Estimated Fair Value | 23,778 | 29,713
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 75,229 | 91,439
Gross Unrealized Gains | 0 | 305
Gross Unrealized Losses | (14,196) | (1,939)
Estimated Fair Value | 61,033 | 89,805
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 4,794 | 7,309
Gross Unrealized Gains | 0 | 148
Gross Unrealized Losses | (129) | 0
Estimated Fair Value | 4,665 | 7,457
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 2,008 | 2,409
Gross Unrealized Gains | 0 | 101
Gross Unrealized Losses | (224) | 0
Estimated Fair Value | 1,784 | 2,510
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 329,267 | 387,848
Gross Unrealized Gains | 0 | 2,800
Gross Unrealized Losses | (53,002) | (5,758)
Estimated Fair Value | 276,265 | 384,890
Other Government - Sponsored Enterprises [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 22,221 | 21,904
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (4,501) | (625)
Estimated Fair Value | $ 17,720 | $ 21,279

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- Definition Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953401-111524 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563 + Details
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