11. STOCK-BASED COMPENSATION - Schedule of Option Summary (Details)	6 Months Ended
Mar. 31, 2022 $ / shares shares
Equity [Abstract]
Number of Option Shares, Beginning Balance \| shares	1,547,029
Weighted Average Exercise Price, Beginning Balance \| $ / shares	$ 18.35
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period \| shares	197,250
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price \| $ / shares	$ 15.29
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period \| shares	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price \| $ / shares	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Canceled/Forfeited in Period \| shares	(157,885)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Canceled/Forfeited in Period, Weighted Average Exercise Price \| $ / shares	$ 18.59
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period \| shares	(99,230)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price \| $ / shares	$ 7.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance, March 31, 2022 \| shares	1,487,164
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance \| $ / shares	$ 18.69

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Weighted average price of options that were either forfeited or expired.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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