Other Long-Term Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Other Liabilities Disclosure [Abstract]

Schedule of other long-term liabilities

Other long-term liabilities consist of the following:

	At December 31,
	2020		2019
In thousands
Supplemental employees' retirement plan ("SERP")	$	4,898	$	6,808
Deferred compensation	21,968		20,768
Long-term incentive plan	3,448		10,527
Noncurrent income taxes payable	3,625		3,390
Environmental remediation liability	5,313		5,525
Finance leases	4,315		5,559
Other	4,069		3,838
Total other long-term liabilities	$	47,636	$	56,415