Other Long-Term Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Other Liabilities Disclosure [Abstract]

Schedule of other long-term liabilities

Other long-term liabilities consist of the following:

	At December 31,
	2017		2016
In thousands
Supplemental employees' retirement plan ("SERP")	$	6,954	$	6,998
Deferred compensation	15,862		15,238
Long-term incentive plan	9,475		8,346
Noncurrent income taxes payable	3,363		2,903
Environmental remediation liability	2,602		3,763
Capital leases	4,985		2,588
Other	3,657		5,080
Total	$	46,898	$	44,916