Summary of Premises and Equipment (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 31,382,000	$ 56,304,000
Less accumulated depreciation and amortization	(11,765,000)	(24,259,000)
Total premises and equipment, net	19,617,000	32,045,000
Land
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	932,000	3,897,000
Building Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	4,327,000	17,119,000
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	16,462,000	26,104,000
Furniture, Fixtures and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 9,661,000	$ 9,184,000