Debt (Tables)

6 Months Ended

Mar. 31, 2012

Debt

Components of unsecured long-term debt outstanding

	March 31,		September 30,
	2012		2011
Unsecured intermediate debt issued August 15, 2002:
Series C, due August 15, 2012, 6.46%	$	75,000	$	75,000
Series D, due August 15, 2014, 6.56%	75,000		75,000
Unsecured senior notes issued July 21, 2009:
Due July 21, 2012, 6.10%	40,000		40,000
Due July 21, 2013, 6.10%	40,000		40,000
Due July 21, 2014, 6.10%	40,000		40,000
Due July 21, 2015, 6.10%	40,000		40,000
Due July 21, 2016, 6.10%	40,000		40,000
	$	350,000	$	350,000
Less long-term debt due within one year	115,000		115,000
Long-term debt	$	235,000	$	235,000