STOCK COMPENSATION - Additional Information (Details) - USD ($) |
12 Months Ended | ||
---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Period that options are issued | 10 years | ||
Percentage of options vesting at either grant date or over four year period | 100.00% | ||
Period that options vest | 4 years | ||
Granted (in shares) | 0 | 0 | 0 |
Exercised | $ 0 | $ 1,011,000 | $ 1,800,000 |
Fair value of share granted (in shares) | 190,187 | 191,372 | |
Award vesting period | eight years | ||
Stock based compensation expense not yet recognized in income | $ 5,500,000 | ||
Weighted average remaining period for unrecognized stock based compensation | 2 years 7 days | ||
Director | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Fair value of share granted (in shares) | 1,000,000 | 800,000 | 1,000,000 |