STOCK-BASED COMPENSATION (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 04, 2021 shares	Sep. 30, 2021 USD ($) installment $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares
STOCK-BASED COMPENSATION
Number of shares remained available for grants		430,063
Stock based compensation expense | $		$ 1,786	$ 540
Granted options (in shares)		336,900	152,100
Aggregate Intrinsic Value Exercised | $		$ 2,503	$ 562
Weighted average estimated fair value of stock options granted | $ / shares		$ 13.90	$ 3.11
Fair value of the restricted shares granted | $		$ 1,576
2018 Equity Incentive Plan
STOCK-BASED COMPENSATION
Number of shares remaining for grant under equity plan		307,759
Number of shares added under amended and restated plan	1,500,000	700,000
Employee stock options
STOCK-BASED COMPENSATION
Number of installments over which options vest | installment		3
Period over which options granted vest and become exercisable		1 year
Period over which options expire		10 years
Granted options (in shares)		337,000
Unrecognized compensation cost | $		$ 3,813
Time over which unrecognized compensation expense expected to vest (in years)		2 years 6 months
Restricted common shares
STOCK-BASED COMPENSATION
Unrecognized compensation cost | $		$ 1,049
Number of shares granted		150,150
Time over which unrecognized compensation expense expected to vest (in years)		1 year 6 months