Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Premises and Equipment [Line Items]
Premises and equipment, gross	$ 41,721	$ 40,452
Less: Accumulated depreciation	19,457	17,753
Premises and equipment, net	22,264	22,699
Land [Member]
Premises and Equipment [Line Items]
Premises and equipment, gross	2,063	2,268
Buildings [Member]
Premises and Equipment [Line Items]
Premises and equipment, gross	21,794	17,673
Furniture, Fixtures and Equipment [Member]
Premises and Equipment [Line Items]
Premises and equipment, gross	17,364	15,936
Construction in Progress [Member]
Premises and Equipment [Line Items]
Premises and equipment, gross	$ 500	$ 4,575