Transactions with Related Parties

12 Months Ended

Dec. 31, 2012

Due to Related Parties [Abstract]

Transactions with Related Parties

TRANSACTIONS WITH RELATED PARTIES

The Company allocates certain corporate costs to Energen Resources and Alagasco based on the nature of the expense to be allocated using various factors including, but not limited to, total assets, earnings, or number of employees. The Company's cash management program seeks to minimize borrowing from outside sources through inter-company lending. Under this program, Alagasco may borrow from but does not lend to affiliates. Alagasco had net trade receivables from affiliates of $5.7 million and $2.8 million at December 31, 2012 and 2011, respectively. Interest income and expense between affiliates is calculated monthly based on the market weighted average interest rate. Alagasco had $0.3 million, $0.4 million and $0.3 million in affiliated company interest expense during the years ended December 31, 2012, 2011 and 2010, respectively.