Investment Securities - Additional Information (Details)	12 Months Ended
Dec. 31, 2022 USD ($) security	Dec. 31, 2021 USD ($) security
Investments, Debt and Equity Securities [Abstract]
Equity securities	$ 48,731,000	$ 36,473,000
Trading debt securities	$ 13,438,000	$ 38,130,000
Number of security positions in the debt securities available for sale portfolio in an unrealized loss position \| security	730	139
Fair value of debt securities available for sale pledged as collateral	$ 333,300,000
Weighted-average remaining expected life of residential mortgage-backed securities available for sale, years	7 years 9 months
Impairment loss	$ 0	$ 0
Allowance for credit losses for available for sale debt securities	$ 0	$ 0
Number of security positions in the securities held to maturity portfolio in an unrealized loss position \| security	802
Unrealized loss positions, qualitative disclosure, number of positions \| security		108
Fair value of investments held to maturity pledged as collateral	$ 771,800,000
Weighted-average remaining expected life of residential mortgage-backed securities held to maturity, years	10 years 2 months 12 days
Charge-offs of debt securities	$ 0	$ 0

Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

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Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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