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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2020
Sep. 30, 2019
ASSETS    
Allowances for accounts receivable $ 309 $ 304
LIABILITIES AND STOCKHOLDERS’ EQUITY    
Debt issuance costs $ 11,867 $ 12,470
Preferred stock, par value (in US$ 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 US$ per share) $ 0.001 $ 0.001
Common stock, shares authorized 63,000,000 63,000,000
Common stock, shares issued 31,020,398 30,933,110
Common stock, shares outstanding 31,020,398 30,933,110