Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 4,000	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	63,952,000	65,452,000
Common stock, shares outstanding	63,952,000	65,452,000