Debt Securities Held to Maturity - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) security
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 411,945,000		$ 411,945,000		$ 421,523,000
Fair Value	351,927,000		351,927,000		370,391,000
Proceeds from sale and maturity of held-to-maturity securities	0	$ 0	0	$ 0
Fair value of securities sold under agreements to repurchase	$ 149,200,000		$ 149,200,000		$ 228,800,000
Number of positions | security	115		115		116
Accrued interest receivable on debt securities held-to-maturity	$ 378,000		$ 378,000		$ 1,000,000
Mortgage-backed securities and collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	362,074,000		362,074,000		371,652,000
Fair Value	$ 310,037,000		$ 310,037,000		$ 327,824,000