Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Consolidated Balance Sheets
Accounts receivable, reserve (in dollars)	$ 4,795	$ 942
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized	160,000,000	160,000,000
Common stock, shares issued	108,738,577	107,598,889
Common stock, shares outstanding	106,716,970	105,697,693
Preferred stock, no par value (in dollars per share)
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Treasury stock, shares	2,021,607	1,901,196