Employee Benefits (Schedule of fair value of pension plan assets, by fair value hierarchy) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	$ 17,983	$ 18,062
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	17,983	18,062
Defined Benefit Pension Plan | Investment in separate accounts fixed income
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	12,377	12,293
Defined Benefit Pension Plan | Investment in separate accounts equity
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	5,606	5,769
Quoted Prices Active Markets for Identical Assets (Level 1) | Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	17,983	18,062
Quoted Prices Active Markets for Identical Assets (Level 1) | Defined Benefit Pension Plan | Investment in separate accounts fixed income
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	12,377	12,293
Quoted Prices Active Markets for Identical Assets (Level 1) | Defined Benefit Pension Plan | Investment in separate accounts equity
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	$ 5,606	$ 5,769