Office Properties and Equipment, net - Schedule of Office Properties and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Office property and equipment, gross	$ 160,084	$ 154,434
Less accumulated depreciation and amortization	(76,507)	(70,557)
Total office properties and equipment, net	83,577	83,877
Land
Property, Plant and Equipment [Line Items]
Office property and equipment, gross	14,623	16,534
Buildings
Property, Plant and Equipment [Line Items]
Office property and equipment, gross	37,383	39,097
Land and building improvements
Property, Plant and Equipment [Line Items]
Office property and equipment, gross	45,272	40,501
Leasehold improvements
Property, Plant and Equipment [Line Items]
Office property and equipment, gross	26,021	23,555
Furniture and equipment
Property, Plant and Equipment [Line Items]
Office property and equipment, gross	$ 36,785	$ 34,747