Employee Benefits (Schedule of plan's funded status and amounts recognized in consolidated statement of financial condition) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Employee Benefits
Projected and accumulated benefit obligation	$ (17,986)	$ (17,868)
Plan assets at fair value	18,139	18,062
Funded status included in accrued expenses and other liabilities	$ 153	$ 194