Benefit Plans - Defined Benefit Plans - Components of Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Supplemental Retirement Plan
Components of net periodic benefit cost:
Service cost	$ 51	$ 48	$ 102	$ 96
Interest cost	318	324	636	648
Amortization of net actuarial loss	26	13	52	26
Net periodic benefit cost	395	385	790	770
Amount recognized in other comprehensive income (loss)	18	9	36	18
Split-Dollar Life Insurance Benefit Plan
Components of net periodic benefit cost:
Amortization of prior transition obligation and actuarial losses	(52)	(48)	(104)	(95)
Interest cost	86	91	172	182	$ 365
Net periodic benefit cost	34	43	68	87
Amount recognized in other comprehensive income (loss)	$ (52)	$ (48)	$ (104)	$ (96)