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Benefit Plans
 9 Months Ended
Sep. 30, 2023
Retirement Benefits [Abstract]  
Benefit Plans
14. Benefit Plans:
The following tables present the components of net periodic expense (benefit) for the Company-sponsored defined benefit pension and postretirement plans, which cover certain employees and retirees located in the U.S.
Defined Benefit Pension Plans
Three months ended
September 30,		Nine months ended
September 30,
2023202220232022
Interest cost$863 $681 $2,590 $1,888 
Expected return on plan assets(826)(380)(2,479)(2,599)
Settlement loss22 38 50 38 
Net periodic expense (benefit)$59 $339 $161 $(673)
Other Postretirement Benefit Plan
Three months ended
September 30,		Nine months ended
September 30,
2023202220232022
Interest cost$6 $5 $18 $13 
Amortization of prior service credit(31)(53)(94)(158)
Amortization of net loss(1)1 (2)3 
Net periodic benefit$(26)$(47)$(78)$(142)