Derivative Financial Instruments (Narrative) (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2016 USD ($) contract	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Derivative [Line Items]
Interest rate swap notional amount		$ 15,000,000.0		$ 15,000,000.0
Cash flow hedge ineffectiveness		$ 18,000	$ 54,000	$ 1,000	$ 4,000
Derivative, fixed interest rate		4.655%		4.655%
Increase in derivative fair value		$ 69,000	204,000	$ 4,000	$ 16,000
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Derivative [Line Items]
Unrealized holding (losses)/gains on investments			204,000
Unrealized tax (expense) benefit		(18,000)	$ 54,000
Interest Rate Swap Agreements [Member]
Derivative [Line Items]
Interest rate swap notional amount	$ 30,000,000.0	15,000,000.0		15,000,000.0
Number of interest rate swap contracts | contract	4
Interest rate swap fair value		$ 800,000		$ 800,000		$ 800,000