CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Current Assets:
Allowance for doubtful accounts	$ 415	$ 496
Stockholders' Equity:
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	100,000	100,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	4,500,000	4,500,000
Common stock, shares issued (in shares)	927,207	918,652
Common stock, shares outstanding (in shares)	907,207	898,652
Treasury stock, at cost (in shares)	20,000	20,000
Series B [Member]
Stockholders' Equity:
Preferred stock, par value (in dollars per share)	$ 0.001
Preferred stock, shares authorized (in shares)	5,700	5,700
Preferred Stock, shares issued (in shares)	31	31
Preferred stock, shares outstanding (in shares)	31	31
Series C [Member]
Stockholders' Equity:
Preferred stock, shares authorized (in shares)	20,000	20,000
Preferred Stock, shares issued (in shares)	20,000	20,000
Preferred stock, shares outstanding (in shares)	19,760	19,760
Preferred stock, liquidation value	$ 12,108	$ 11,541