Investment Securities - Securities Temporarily Impaired (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	$ 273,453	$ 99,070
Unrealized Losses (Less than 12 months)	(6,144)	(1,062)
Fair Value (Estimated) (12 months or more)	55,942	3,878
Unrealized Losses (12 months or more)	(2,297)	(88)
Fair Value (Estimated)	329,395	102,948
Unrealized Losses	(8,441)	(1,150)
U.S. Government-sponsored agencies
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	24,030	30,212
Unrealized Losses (Less than 12 months)	(920)	(333)
Fair Value (Estimated) (12 months or more)	29,170	0
Unrealized Losses (12 months or more)	(1,375)	0
Fair Value (Estimated)	53,200	30,212
Unrealized Losses	(2,295)	(333)
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	216,461	65,505
Unrealized Losses (Less than 12 months)	(4,768)	(724)
Fair Value (Estimated) (12 months or more)	26,772	3,878
Unrealized Losses (12 months or more)	(922)	(88)
Fair Value (Estimated)	243,233	69,383
Unrealized Losses	(5,690)	(812)
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	29,528	855
Unrealized Losses (Less than 12 months)	(390)	(3)
Fair Value (Estimated) (12 months or more)	0	0
Unrealized Losses (12 months or more)	0	0
Fair Value (Estimated)	29,528	855
Unrealized Losses	(390)	(3)
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	3,434	2,498
Unrealized Losses (Less than 12 months)	(66)	(2)
Fair Value (Estimated) (12 months or more)	0	0
Unrealized Losses (12 months or more)	0	0
Fair Value (Estimated)	3,434	2,498
Unrealized Losses	$ (66)	$ (2)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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