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Employee Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2020
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
Components of the net periodic pension and postretirement benefit credit are as follows:
 Three Months EndedSix Months Ended
June 30,June 30,
 2020201920202019
Service cost$112  $106  $224  $212  
Interest cost1,015  1,322  2,029  2,644  
Expected return on assets(1,681) (1,531) (3,362) (3,062) 
Amortization of prior service cost13  13  26  26  
Amortization of actuarial loss12  10  24  20  
Net periodic pension and postretirement benefit credit$(529) $(80) $(1,059) $(160) 
Contributions paid$—  $—  $—  $—