Asset Impairment (Tables)

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Impairment of Long-Lived Assets Held and Used by Asset

Impairments recognized by Energen during the years ended December 31, 2015, 2014 and 2013 are presented below:

Years ended December 31, (in thousands)	2015		2014		2013
Continuing operations
Permian Basin properties
Central Basin Platform	$	484,848	$	—	$	—
Delaware Basin	607,303		90,594		—
Midland Basin	—		25,776		—
San Juan Basin properties	133,055		230,315		—
Permian Basin unproved leasehold properties	29,168		64,361		13,906
San Juan Basin unproved leasehold properties	37,934		5,755		—
Total asset impairments from continuing operations	1,292,308		416,801		13,906
Discontinued operations
North Louisiana/East Texas oil and natural gas properties	—		1,936		29,794
Total asset impairments from discontinued operations	—		1,936		29,794
Total asset impairments	$	1,292,308	$	418,737	$	43,700