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Investments in Securities - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
INVESTMENT SECURITIES
Fair value of debt securities reported less than their historical cost		$ 456,900,000	$ 472,000,000.0
Available sale of debt securities reported less than their historical cost percent of investment portfolio		95.50%	96.20%
Amortized Carrying Value		$ 195,023,000	$ 202,495,000
Total fair value of held-to-maturity		171,193,000	177,765,000
Available-for-sale securities		478,207,000	490,592,000
Allowance for credit losses on securities		0
Securities transferred from available for sale portfolio to held to maturity portfolio	$ 226,500,000	0
Net of income tax	775,000
Net unrealized gains on transfers	$ 1,000,000.0
unrealized gross loss		65,000
Unrealized losses		$ 49,000
Held to Maturity investment portfolio reported less than their historical cost as a percent of investment portfolio		100.00%
Agency collateralized mortgage obligations
INVESTMENT SECURITIES
Amortized Carrying Value		$ 113,903,000	119,362,000
Total fair value of held-to-maturity		99,241,000	105,233,000
Available-for-sale securities		75,946,000	78,474,000
Federal National Mortgage Association Certificates and Obligations (FNMA)
INVESTMENT SECURITIES
Agency collateralized mortgage obligations		4,100,000	3,900,000
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC)
INVESTMENT SECURITIES
Agency collateralized mortgage obligations		66,500,000	67,800,000
Government National Mortgage Association Certificates and Obligations (GNMA)
INVESTMENT SECURITIES
Agency collateralized mortgage obligations		5,300,000	6,700,000
Fixed rates of interest
INVESTMENT SECURITIES
Mortgage backed securities		280,200,000	286,500,000
Federal National Mortgage Association Certificates and Obligations (FNMA)
INVESTMENT SECURITIES
Agency mortgage-backed securities		190,900,000	196,400,000
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC)
INVESTMENT SECURITIES
Agency mortgage-backed securities		86,400,000	90,100,000
Government National Mortgage Association Certificates and Obligations (GNMA)
INVESTMENT SECURITIES
Agency mortgage-backed securities		$ 2,900,000	$ 78,500,000

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