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

12 Months Ended

Dec. 31, 2012

Long-term debt and other long-term liabilites [Abstract]

Long Term Debt

Long-term debt consisted of the following as of December 31:

	2012		2011
	(In thousands)
Credit agreement with an average interest rates of 2.9% and 2.7% at December 31, 2012 and 2011, respectively	$	71,100	$	50,000
6.625% senior subordinated notes due 2021, net of unamortized discount of $4.7 million at December 31, 2012	645,259		250,000
Total long-term debt	$	716,359	$	300,000

Other Long Term Liabilities

Other long-term liabilities consisted of the following as of December 31:

	2012		2011
	(In thousands)
ARO liability	$	146,159	$	96,446
Workers’ compensation	18,517		17,026
Separation benefit plans	7,972		6,845
Gas balancing liability	3,838		3,263
Deferred compensation plan	2,779		2,463
	179,265		126,043
Less current portion	12,282		12,213
Total other long-term liabilities	$	166,983	$	113,830