Long-Term Debt and Notes Payable (Tables)

12 Months Ended

Dec. 31, 2012

Debt Instrument [Line Items]

Schedule of long-term debt

Long-term debt consisted of the following:

(in thousands)	December 31, 2012		December 31, 2011
Energen Corporation:
Medium-term Notes, Series A and B, interest ranging from 7.125% to 7.6%, for notes due July 24, 2017 to February 15, 2028	$	154,000	$	155,000
5% Notes, due October 1, 2013	50,000		50,000
4.625% Notes, due September 1, 2021	400,000		400,000
Senior Term Loans, (floating rate interest LIBOR plus 1.375%; 1.59% at December 31, 2012), due March 31, 2014 to November 29, 2016	300,000		300,000
Alabama Gas Corporation:
5.20% Notes, due January 15, 2020	40,000		40,000
5.70% Notes, due January 15, 2035	35,028		35,246
5.368% Notes, due December 1, 2015	80,000		80,000
5.90% Notes, due January 15, 2037	45,000		45,000
3.86% Notes, due December 21, 2021	50,000		50,000
Total	1,154,028		1,155,246
Less amounts due within one year	50,000		1,000
Less unamortized debt discount	500		546
Total	$	1,103,528	$	1,153,700

Schedule of aggregate maturities of long-term debt

The aggregate maturities of Energen's long-term debt for the next five years are as follows:

Years ending December 31, (in thousands)
2013	2014	2015	2016	2017
$50,000	$100,000	$180,000	$100,000	$19,000

Schedule of credit facilities

The following is a summary of information relating to the credit facilities:

(in thousands)	December 31, 2012			December 31, 2011
Energen outstanding	$	566,000		$	—
Alagasco outstanding	77,000			15,000
Notes payable to banks	643,000			15,000
Available for borrowings	707,000			1,004,000
Total	$	1,350,000		$	1,019,000
Energen maximum amount outstanding at any month-end	$	643,000		$	363,000
Energen average daily amount outstanding	$	331,068		$	229,094
Energen weighted average interest rates based on:
Average daily amount outstanding	1.82		%	2.04		%
Amount outstanding at year-end	1.35		%	3.58		%
Alagasco maximum amount outstanding at any month-end	$	77,000		$	70,000
Alagasco average daily amount outstanding	$	21,254		$	29,268
Alagasco weighted average interest rates based on:
Average daily amount outstanding	1.44		%	1.72		%
Amount outstanding at year-end	1.11		%	3.58		%

Alabama Gas Corporation

Debt Instrument [Line Items]

Schedule of aggregate maturities of long-term debt

he aggregate maturities of Alagasco's long-term debt for the next five years are as follows:

Years ending December 31, (in thousands)
2013	2014	2015	2016	2017
—	—	$80,000	—	—