Debt Securities Held to Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 419,033	$ 429,734
Gross Unrealized Gains	177	6,741
Gross Unrealized (Losses)	(20,186)	(1,686)
Allowance for Credit Losses	0
Fair Value	399,024	434,789
U.S. government and agency obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	44,871	44,870
Gross Unrealized Gains	0	0
Gross Unrealized (Losses)	(3,358)	(759)
Allowance for Credit Losses	0
Fair Value	41,513	44,111
Mortgage-backed securities and collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	374,162	384,864
Gross Unrealized Gains	177	6,741
Gross Unrealized (Losses)	(16,828)	(927)
Allowance for Credit Losses	0
Fair Value	$ 357,511	$ 390,678

Amount, excluding accrued interest, of allowance for credit loss on 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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-Section 45
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Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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