Quarterly report pursuant to Section 13 or 15(d)

Employee Benefit Plans - Net Periodic Benefit Income (Details)

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Employee Benefit Plans - Net Periodic Benefit Income (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Base Plan    
Net periodic benefit cost:    
Service cost $ 79 $ 81
Interest cost 62 57
Expected return on plan assets (64) (57)
Net periodic benefit cost 77 81
Performance Plans    
Net periodic benefit cost:    
Service cost 57 388
Interest cost 26 24
Expected return on plan assets (25) (22)
Net periodic benefit cost $ 58 $ 390