ACCRUED EXPENSES (Tables)

12 Months Ended

Dec. 31, 2021

ACCRUED EXPENSES.

Schedule of accrued expenses

	December 31
	2021		2020
	(in thousands)
Workers’ compensation, third-party casualty, and loss and damage claims reserves	$	116,535	$	103,898
Accrued vacation pay		52,746		51,728
Accrued compensation, including retirement benefits		110,755		67,690
Taxes other than income		10,225		10,468
Other		15,590		12,962
Total accrued expenses	$	305,851	$	246,746