ACQUISITION - Schedule of total consideration paid for acquisition (Details) - USD ($) $ in Thousands	1 Months Ended
	Aug. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020
Recognized amounts of identifiable assets
Goodwill		$ 66,194	$ 63,945	$ 63,945
Yoke
Consideration
Cash paid for acquisitions	$ 3,000
Total net assets acquired	1,000
Fair value of total consideration transferred	4,000
Recognized amounts of identifiable assets
Total net assets acquired	66
Identifiable intangible assets	1,685
Total identifiable net assets	1,751
Goodwill	$ 2,249