XML 95 R49.htm IDEA: XBRL DOCUMENT

Summary of Significant Accounting Policies (Details Textual) (USD $)	12 Months Ended			1 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Jul. 31, 2012 Swiss Re Financial Products Corporation [Member]	Sep. 30, 2012 Swiss Re Financial Products Corporation [Member]	Sep. 30, 2012 Customer Lists [Member] Maximum [Member]	Sep. 30, 2012 Customer Lists [Member] Minimum [Member]	Sep. 30, 2012 Trade Names [Member] Maximum [Member]	Sep. 30, 2012 Trade Names [Member] Minimum [Member]	Sep. 30, 2012 Noncompete Agreements [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Period for amortized on a straight line basis						10 years	7 years	20 years	7 years	5 years
Payment received from weather hedge contract, per heating degree-day shortfall	$ 35,000			$ 35,000
Percentage in heating degree days less than ten year average that is covered	92.50%			92.50%
Derivative maximum payout	12,500,000				12,500,000
Summary of Significant Accounting Policies (Additional Textual) [Abstract]
Maximum maturity period of cash equivalent investment	3 months
Advertising and direct mail expenses	$ 9,600,000	$ 9,500,000	$ 9,600,000