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Consolidated Balance Sheets (Parentheticals) - USD ($)
$ in Thousands
Jun. 30, 2023
Sep. 30, 2022
Statement of Financial Position [Abstract]    
Accounts Receivable, Allowance for Credit Loss, Current $ (2,784) $ (5,361)
Preferred Stock, Par or Stated Value Per Share $ 0.01 $ 0.01
Preferred Stock, Shares Authorized 10,000,000 10,000,000
Common Stock, Par or Stated Value Per Share $ 0.01 $ 0.01
Common Stock, Shares Authorized 100,000,000 100,000,000
Common Stock, Shares, Issued 22,049,529 22,049,529
Common Stock, Shares, Outstanding 20,191,579 20,341,900
Treasury Stock, Shares 1,857,950 1,707,629