Borrowed Funds and Subordinated Debt - Average Balances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
FHLB advances, average balance	$ 35,762	$ 15,885	$ 22,250
FHLB advances, average rate	1.65%	2.42%	1.72%
FRB PPFL advances, average balance	0.35%	0.00%	0.00%
FRB PPFL advances, average rate	$ 4,703	$ 0	$ 0
Other borrowings, average balance	$ 14	$ 55	$ 0
Other borrowings, average rate	1.07%	2.64%	0.00%
Total borrowed funds, average balance	$ 40,479	$ 15,940	$ 22,250
Total borrowed funds, average rate	1.50%	2.42%	1.72%