Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2024
Sep. 30, 2024
Stockholders' equity:    
Allowance for doubtful accounts $ 1.4 $ 1.5
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 10,000,000 10,000,000
Common stock, shares issued (in shares) 3,115,674 3,131,360
Common stock, shares outstanding (in shares) 3,115,674 3,131,360
Treasury stock (in shares) 710,373 694,687
Series E Convertible Preferred Stock    
Stockholders' equity:    
Preferred stock, par value (in usd per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 200,000 200,000
Preferred stock, shares issued (in shares) 47,840 47,840
Preferred stock, outstanding shares (in shares) 47,840 47,840
Preferred stock, liquidation preference (in usd per share) $ 0.30 $ 0.30
Treasury stock, Series E preferred (in shares) 80,000 80,000