CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
CONSOLIDATED BALANCE SHEETS
Allowance for Doubtful Accounts Receivable, Current	$ 1,995	$ 1,505
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	50,000,000	50,000,000
Common stock, shares issued	30,645,625	30,596,940
Treasury stock, shares	4,607,911	4,615,627