Acquisition and Preliminary Purchase Price Allocation - Additional Information (Details) - USD ($) $ in Thousands, shares in Millions		3 Months Ended		12 Months Ended
	Mar. 10, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Asset Acquisition [Line Items]
Acquisition of Citizens Commerce Bancshares, Inc.			$ 62,078
Gain on sale of marketable securities				$ 700
Non-impaired loans	$ 246,400
Citizens Commerce Bancshares, Inc.
Asset Acquisition [Line Items]
Acquisition of Citizens Commerce Bancshares, Inc. (in shares)	0.7
Acquisition of Citizens Commerce Bancshares, Inc.	$ 61,600
Business combination, acquired receivables, estimated uncollectible	2,000
Fair value of purchased financial assets with credit deterioration	4,900
Contractual amounts receivable	8,500
Allowance for credit loss	3,600
Premium on time deposits	$ 600
Time deposits amortization period	5 years
Citizens Commerce Bancshares, Inc. | Core Deposits
Asset Acquisition [Line Items]
(Losses) gains on sale of investment securities, net		$ 41,000
Core deposit intangible	$ 8,278	$ 0	$ 8,278
Intangible assets amortization period	10 years
Citizens Commerce Bancshares, Inc. | Citizens Commerce Bancshares, Inc.
Asset Acquisition [Line Items]
Equity ownership positions in the community bank holding companies (percent)	100.00%