Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 3,259	$ 3,254
Preferred stock, par value (USD per share)	$ 0	$ 0
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares outstanding	0	0
Common stock, par value (USD per share)	$ 0	$ 0
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	78,090	78,715
Common stock, shares outstanding	78,090	78,715