Securities - Additional Information (Details)		1 Months Ended	12 Months Ended
	Dec. 31, 2021 USD ($) security	Mar. 31, 2022 USD ($) security	Dec. 31, 2022 USD ($) security	Dec. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($)
Investments, Debt and Equity Securities [Abstract]
Number of securities | security	475	793		475
Aggregate fair value of securities	$ 490,200,000	$ 120,900,000		$ 490,200,000
Gain(Loss) from net unrealized holdings, net of tax	$ 5,900,000	$ (814,000)	$ (118,006,000)	$ (24,117,000)	$ 24,424,000
Number of securities in unrealized loss positions | security	1,129		2,828	1,129
Unrealized loss positions	$ 1,535,967,000		$ 2,599,464,000	$ 1,535,967,000
Percentage of portfolio			86.00%	57.00%
Allowance for credit losses for available for sale debt securities	0		$ 0	$ 0
Accrued interest receivable on available for sale debt securities	$ 14,600,000		17,800,000	14,600,000
Tax effect of the proceeds from sale of securities			0	$ 192,000	$ 902,000
Pledged of fair value of securities as collateral			160,500,000
Amortization cost of securities as collateral not separately reported			186,400,000
Debt instrument repurchase agreement			137,900,000
Securities pledged for federal home loan bank at fair value			405,200,000
Securities for federal home loan bank not separately reported			439,200,000
Debt instrument federal home loan bank			244,000,000
Securities pledged for derivative at fair value			24,800,000
Securities pledged for derivative at amortized cost			27,100,000
Debt instrument derivative swap agreement			$ 43,800,000