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Securities (Reconciliation of fair value of available for sale securities) (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | $ 809 | $ 8,808
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (95,016) | (21,396)
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 1,552,731 | 1,571,148
Debt Securities, Available-for-sale, Amortized Cost | 1,646,938 | 1,583,736
U.S. government agency securities |  |
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 44 | 990
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (15,594) | (2,901)
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 215,935 | 215,482
Debt Securities, Available-for-sale, Amortized Cost | 231,485 | 217,393
U.S. treasury securities |  |
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax |  | 172
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (51,275) | (12,191)
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 822,333 | 861,448
Debt Securities, Available-for-sale, Amortized Cost | 873,608 | 873,467
Agency mortgage-backed securities |  |
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 670 | 4,512
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (24,436) | (5,534)
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 397,985 | 363,933
Debt Securities, Available-for-sale, Amortized Cost | 421,751 | 364,955
Agency Collateralized Mortgage Obligations [Member] |  |
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 39 | 1,282
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (796) | (571)
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 49,002 | 79,677
Debt Securities, Available-for-sale, Amortized Cost | 49,759 | 78,966
US States and Political Subdivisions Debt Securities [Member] |  |
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 8 | 11
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 200 | 203
Debt Securities, Available-for-sale, Amortized Cost | 192 | 192
Single Issuer Trust Preferred Securities Issued by Banks and Insurers [Member] |  |
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 2
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 489 | 491
Debt Securities, Available-for-sale, Amortized Cost | 489 | 489
Pooled trust preferred securities issued by banks and insurers |  |
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (200) | (199)
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 999 | 1,000
Debt Securities, Available-for-sale, Amortized Cost | 1,199 | 1,199
Small Business Administration Pooled Securities [Member] |  |
Reconciliation of fair value of securities |  |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 48 | 1,839
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (2,715) | 0
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0
Debt Securities, Available-for-sale | 65,788 | 48,914
Debt Securities, Available-for-sale, Amortized Cost | $ 68,455 | $ 47,075

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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