SEGMENT INFORMATION - Operating Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
SEGMENT INFORMATION
Identifiable assets:	$ 321,856	$ 61,593
Depreciation and amortization:	6,268	4,074
Goodwill, net:	51,927	4,368	$ 3,617
Capital expenditures:	12,472	6,200
Services Segment
SEGMENT INFORMATION
Identifiable assets:	161,805	54,480
Depreciation and amortization:	5,320	3,272
Goodwill, net:	51,927	4,368
Capital expenditures:	12,241	4,781
Products Segment
SEGMENT INFORMATION
Identifiable assets:	1,772	1,535
Depreciation and amortization:	34	23
Capital expenditures:	28	9
Unallocated Corporate Segment
SEGMENT INFORMATION
Identifiable assets:	158,279	5,578
Depreciation and amortization:	914	779
Capital expenditures:	$ 203	$ 1,410