Derivative Instruments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Collateral already posted, aggregate fair value	$ 66,200	$ 83,000
Hedged Asset, Fair Value Hedge, Last-of-Layer, Cumulative Increase (Decrease)	(2,076)	132
Hedged Asset, Fair Value Hedge, Last-of-Layer, Amount	324,800	330,000
Fair Value Hedge Agreement, Notional Amount	100,000
Interest Rate Swap | Non-hedging interest rate derivatives:
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 150,000	$ 150,000