Other Long-term Liabilities

12 Months Ended

Dec. 31, 2018

Other Liabilities Disclosure [Abstract]

Other Long-Term Liabilities

OTHER LONG-TERM LIABILITIES

Other long-term liabilities consist of the following:

	At December 31,
	2018		2017
In thousands
Supplemental employees' retirement plan ("SERP")	$	6,384	$	6,954
Deferred compensation	17,885		15,862
Long-term incentive plan	9,821		9,475
Noncurrent income taxes payable	3,371		3,363
Environmental remediation liability	4,610		2,602
Capital leases	6,579		4,985
Other	5,197		3,657
Total	$	53,847	$	46,898

The Company maintains a non-qualified deferred compensation plan for certain of its employees as well as a non-qualified deferred compensation plan for its Board of Directors. Generally, participants in these plans have the ability to defer a certain amount of their compensation, as defined in the agreement. The deferred compensation liability will be paid out either upon retirement or as requested based upon certain terms in the agreements and in accordance with Internal Revenue Code Section 409A.

Disclosures regarding the assumptions used in the determination of the SERP liabilities are included in Note 15, Pension Plans. Discussions of our environmental remediation liabilities are in Note 11, Environmental Costs, and Note 17, Commitments and Contingencies.