Supplemental Schedule Of Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2014

Supplemental Schedule Of Cash Flow Information [Abstract]

Schedule Of Supplemental Cash Flow Information

	Year ended December 31,
	2014	2013	2012
	(In thousands)
Capital leases issued for equipment	$               75,198	$               50,565	$         67,207
Asset retirement obligation additions	$                      68	$                    144	$                44