XML 127 R99.htm IDEA: XBRL DOCUMENT v3.22.4
Employee Benefit Plans - Post-retirement Healthcare Plan, Narrative (Details) - Postretirement Healthcare Plan
$ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Requisite service age, minimum 55 years
Expected amortization next fiscal year $ 39
Effect of one percentage point increase on healthcare cost (as a percent) 6.00%
Effect of 1-percent increase in assumed health care cost trend rates on interest cost in current period $ 3,600
Effect of 1-percent increase in assumed health care cost trend rates on postretirement benefit obligation $ 72,600