SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, CAPITALIZED AND DEFERRED INTEREST (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
SBC interest rate	2.84%	1.61%	2.16%
Deferred Interest	$ 653	$ 878	$ 1,100
NJNG [Member]
AFUDC - Debt	921	300	1,020
AFUDC - Equity	2,037	638	2,100
Total	$ 2,958	$ 938	$ 3,120
Weighted average interest rate	1.05%	1.47%	5.21%