Consolidated Balance Sheets (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Current assets:
Allowance for doubtful accounts	$ 998	$ 1,622
Stockholders' equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000	500,000
Common stock, shares issued	113,745	115,025
Common stock, shares outstanding	113,745	115,025