Securities - Held to Maturity Securities - Amortized Cost (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 238,621	$ 118,175
Gross Unrealized Gains	0	1,643
Gross Unrealized Losses	(12,097)	(741)
Estimated Fair Value	226,524	119,077
U.S. government agency debt securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	61,818	66,307
Gross Unrealized Gains	0	62
Gross Unrealized Losses	(5,512)	(363)
Estimated Fair Value	56,306	66,006
U.S. government-sponsored enterprise debt securities (1) (2)
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	176,803	51,868
Gross Unrealized Gains	0	1,581
Gross Unrealized Losses	(6,585)	(378)
Estimated Fair Value	170,218	53,071
Residential Mortgage Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	210,100	89,400
Estimated Fair Value	199,800	88,700
Commercial Mortgage Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	28,500	28,800
Estimated Fair Value	$ 26,600	$ 30,400

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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