CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net Income (Loss)	$ (2,312)	$ 71,283
Amortization of unrecognized net periodic benefit cost (credit), net of tax: (2024 - $65; 2023 - $86)
Net actuarial gain	(187)	(247)
Interest rate swap and foreign currency translation:
Change in unrealized loss on interest rate swap, net of tax: (2024 - $130; 2023 - $161)	(366)	(452)
Change in foreign currency translation, net of tax: (2024 - $150; 2023 - $6)	(426)	(18)
OTHER COMPREHENSIVE INCOME (LOSS), net of tax	(979)	(717)
TOTAL COMPREHENSIVE INCOME (LOSS)	$ (3,291)	$ 70,566