Borrowings, Liabilities Securities Sold under Agreements to Repurchase (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Repurchase Agreements [Abstract]
Securities sold under agreements to repurchase	$ 52,876	$ 0
Securities collateral pledged	$ 71,400	$ 0
Weighted average rate on repurchase agreements	0.10%
U.S. Government Agency Securities [Member]
Repurchase Agreements [Abstract]
Securities collateral pledged	$ 23,400
Mortgage Backed Securities [Member]
Repurchase Agreements [Abstract]
Securities collateral pledged	43,800
Collateralized Mortgage Obligations [Member]
Repurchase Agreements [Abstract]
Securities collateral pledged	$ 4,200