Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Feb. 01, 2022
Finite-Lived Intangible Assets [Line Items]
Goodwill from business combinations	$ 9,346,000
Goodwill impairment	0	$ 0
Net impairment (net recovery)	0	(791,000)
Amortization of other intangible assets	4,437,000	6,006,000
Core Deposits and Other
Finite-Lived Intangible Assets [Line Items]
Impairment of core deposits and other intangibles	$ 0	$ 0
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period, years	9 years 2 months 12 days
Other
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period, years	4 years 9 months 18 days
Westchester Bank Holding Corporation
Finite-Lived Intangible Assets [Line Items]
Goodwill from business combinations	$ 5,000,000
Landmark Insurance of the Palm Beaches
Finite-Lived Intangible Assets [Line Items]
Other intangible assets			$ 6,200,000
Consumer Lending
Finite-Lived Intangible Assets [Line Items]
Goodwill from business combinations	85,000
Wealth Management | Consumer Lending
Finite-Lived Intangible Assets [Line Items]
Goodwill from business combinations	$ 4,370,000