Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Current assets:
Allowance for doubtful accounts	$ 362	$ 304
Stockholders’ equity:
Preferred stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	117,472,000	117,163,000
Common stock, shares outstanding	117,472,000	117,163,000