RESTATEMENT OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS - Consolidated Balance Sheets (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total current assets	$ 48,062	$ 15,300
Property and equipment, net	44,678	28,729
Goodwill	50,617	4,368
Other noncurrent assets	33,383
Total assets	176,740	61,593
Total liabilities	82,979	53,997
Common shares, no par value	3,928	2,706
Additional paid-in capital	110,230	26,775
Accumulated deficit	(20,397)	(21,910)
Total liabilities and shareholders' equity	$ 176,740	$ 61,593
Common Stock, No Par Value	$ 0	$ 0
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total current assets	$ 48,062
Property and equipment, net	44,678
Goodwill	45,750
Other noncurrent assets	33,383
Total assets	171,873
Total liabilities	82,979
Common shares, no par value	3,928
Additional paid-in capital	110,230
Accumulated deficit	(25,264)
Total liabilities and shareholders' equity	171,873
Restated Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill	4,867
Total assets	4,867
Accumulated deficit	4,867
Total liabilities and shareholders' equity	$ 4,867