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Securities (Details Textual) (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021 | Jun. 30, 2021
--- | --- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |  |
Interest Receivable | $ (39,000) |  | $ (29,900)
Trading | 3,637 | $ 3,720 |
Debt Securities, Available-for-sale | 1,501,949 | 1,571,148 |
Debt Securities, Available-for-sale, Past due | 0 | 0 |
Investments in obligations of individual states, counties or municipalities which exceed 10% of equity | 0 | 0 |
Debt Securities, Available-for-sale, Past due | 0 | 0 |
Debt Securities, Available-for-sale, Nonaccrual | 0 | 0 |
Debt Securities, Held-to-maturity, Nonaccrual | 0 | 0 |
Securities (Textual) [Abstract] |  |  |
Callable Securities in Investment Portfolio | 25,800 |  |
Pledged Financial Instruments, Not Separately Reported, Securities | 876,400 | 740,600 |
Investments in obligations of individual states, counties or municipalities which exceed 10% of equity | 0 | 0 |
Debt Securities, Held-to-maturity | 1,408,189 | 1,066,818 |
Equity Securities, FV-NI | 21,181 | 23,173 |
Debt Securities, Held-to-maturity, 90 Days or More Past Due, Still Accruing | 0 | 0 |
Available-for-sale Securities [Member] |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Interest Receivable | (3,000) | (3,000) |
Held-to-maturity Securities [Member] |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Interest Receivable | $ (2,900) | $ (2,000) |

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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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