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

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Long-Term Debt

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

	June 30, 2019		December 31, 2018
	(In thousands)
Unit credit agreement with an average interest rate of 4.2% at June 30, 2019	$	103,500	$	—
Superior credit agreement with an average interest rate of 6.5% at June 30, 2019	7,500		—
6.625% senior subordinated notes due 2021	650,000		650,000
Total principal amount	761,000		650,000
Less: unamortized discount	(1,303)		(1,623)
Less: debt issuance costs, net	(3,107)		(3,902)
Total long-term debt	$	756,590	$	644,475

Other Long-Term Liabilities

Other long-term liabilities consisted of the following:

	June 30, 2019		December 31, 2018
	(In thousands)
Asset retirement obligation (ARO) liability	$	67,433	$	64,208
Workers’ compensation	12,118		12,738
Finance lease obligations	9,400		11,380
Contract liability	8,513		9,881
Separation benefit plans	9,749		8,814
Deferred compensation plan	6,002		5,132
Gas balancing liability	3,372		3,331
	116,587		115,484
Less current portion	13,887		14,250
Total other long-term liabilities	$	102,700	$	101,234