Borrowings - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Borrowings [Abstract]
Increase in borrowings	$ 32,276,000		$ 32,276,000
Increase in borrowings, percentage	55.50%		55.50%
Cash flow hedge, description	The Company executed a three-year cash flow hedge on $20,000,000 in three-month advances from the FHLB in the second quarter of 2020
Cash flow hedge, term	3 years
Short-term debt with FHLB	$ 20,000,000		$ 20,000,000		$ 0
Federal Reserve Bank ("FRB") advances	$ 31,298,000		$ 31,298,000		$ 0
FHLB advances, weighted average interest rate	2.75%		2.75%
FHLB advances, repayment of debt			$ 10,000,000	$ 15,000,000
FHLB advances, prepayment penalty	$ (524,000)	$ 0	$ (524,000)	$ 0