Borrowed Funds - Summary of FHLB of Boston Advances (Details) - Federal Home Loan Bank of Boston - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Amount
Within one year	$ 17	$ 0
Over one year to three years	1,488	1,412
Over three years to five years	2,854	2,309
Over five years	9,661	10,903
Total Federal Home Loan Bank advances	$ 14,020	$ 14,624
Weighted Average Interest Rate
Within one year	0.14%	0.00%
Over one year to three years	0.32%	0.22%
Over three years to five years	1.10%	1.31%
Over five years	1.24%	1.22%
Total Federal Home Loan Bank advances	1.11%	1.14%