EQUITY - Restricted share activity (Details) - Restricted common shares shares in Thousands	9 Months Ended
	Jun. 30, 2021 $ / shares shares
Beginning balance (in shares) | shares	128
Granted (in shares) | shares	150
Vested (in shares) | shares	(10)
Forfeited (in shares) | shares	(5)
Ending balance (in shares) | shares	263
Beginning balance (in dollars per share) | $ / shares	$ 3.88
Granted (in dollars per share) | $ / shares	10.50
Vested (in dollars per share) | $ / shares	1.28
Forfeited (in dollars per share) | $ / shares	6.63
Ending balance (in dollars per share) | $ / shares	$ 7.70