Long-Term Debt And Other Long-Term Liabilities (Tables)

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Long-Term Debt

As of the date indicated, our long-term debt consisted of the following:

	March 31, 2019		December 31, 2018
	(In thousands)
Unit credit agreement with an average interest rate of 4.0% at March 31, 2019	$	40,000	$	—
Superior credit agreement	—		—
6.625% senior subordinated notes due 2021	650,000		650,000
Total principal amount	690,000		650,000
Less: unamortized discount	(1,464)		(1,623)
Less: debt issuance costs, net	(3,505)		(3,902)
Total long-term debt	$	685,031	$	644,475

Other Long-Term Liabilities

Other long-term liabilities consisted of the following:

	March 31, 2019		December 31, 2018
	(In thousands)
Asset retirement obligation (ARO) liability	$	67,840	$	64,208
Workers’ compensation	12,226		12,738
Finance lease obligations	10,395		11,380
Contract liability	9,173		9,881
Separation benefit plans	9,291		8,814
Deferred compensation plan	5,845		5,132
Gas balancing liability	3,372		3,331
	118,142		115,484
Less current portion	14,310		14,250
Total other long-term liabilities	$	103,832	$	101,234