Borrowed Funds (Long-term Borrowings) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Sep. 30, 2020	Mar. 31, 2022
Debt Disclosure [Abstract]
Long-term borrowings	$ 679		$ 674
Average interest rate paid on long-term borrowings	5.34%		5.34%
Federal Home Loan Bank Collateral Amount for Advances			$ 1,680,000
Debt Instrument, Basis Spread on Variable Rate	230.00%	487.00%