Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
NET EARNINGS	$ 7,428	$ 38,022	$ 16,047	$ 58,163
OTHER COMPREHENSIVE INCOME:
Foreign Currency Translation	0	20	0	20
TOTAL COMPREHENSIVE INCOME, net of tax	9,394	41,707	19,980	65,553
Pension Plan [Member]
OTHER COMPREHENSIVE INCOME:
Defined Benefit Plan	1,984	3,665	3,968	7,370
Other Postretirement Benefits Plan [Member]
OTHER COMPREHENSIVE INCOME:
Defined Benefit Plan	$ (18)	$ 0	$ (35)	$ 0