Common Stock and Stock Compensation - Restricted Stock Award Activity (Details) - Restricted stock	9 Months Ended
	Jun. 30, 2022 $ / shares shares
Shares
Outstanding, beginning balance (in shares)	2,218,777
Granted (in shares)	1,365,878
Released (in shares)	(486,627)
Cancelled (in shares)	(743,299)
Outstanding, ending balance (in shares)	2,354,729
Weighted Average Grant Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 4.86
Granted (in dollars per share) | $ / shares	7.37
Released (in dollars per share) | $ / shares	4.77
Cancelled (in dollars per share) | $ / shares	6.46
Outstanding, ending balance (in dollars per share) | $ / shares	$ 6.30
Shares withheld to satisfy related income tax withholding (in shares)	101,103