GOODWILL AND INTANGIBLE ASSETS - Summary of Amortizable Intangible Asset (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross	$ 31,685	$ 31,685
Amortizable intangible assets, Accumulated Amortization	(8,652)	(5,514)
Amortizable intangible assets, Net	23,033	26,171
Goodwill, Gross	63,945	63,945
Goodwill, Net	63,945	63,945
Total intangible assets and goodwill, Gross	95,630	95,630
Total intangible assets and goodwill, Net	86,978	90,116
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross	2	2
Amortizable intangible assets, Accumulated Amortization	(2)	(2)
Amortizable intangible assets, Net	$ 0	$ 0
Useful life	2 years	2 years
Brand and tradenames
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross	$ 1,695	$ 1,695
Amortizable intangible assets, Accumulated Amortization	(699)	(470)
Amortizable intangible assets, Net	996	1,225
Developed technology
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross	10,939	10,939
Amortizable intangible assets, Accumulated Amortization	(5,110)	(3,266)
Amortizable intangible assets, Net	5,829	7,673
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross	19,049	19,049
Amortizable intangible assets, Accumulated Amortization	(2,841)	(1,776)
Amortizable intangible assets, Net	$ 16,208	$ 17,273
Minimum | Brand and tradenames
Finite-Lived Intangible Assets [Line Items]
Useful life	3 years	3 years
Minimum | Developed technology
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years	5 years
Minimum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years	10 years
Maximum | Brand and tradenames
Finite-Lived Intangible Assets [Line Items]
Useful life	7 years	7 years
Maximum | Developed technology
Finite-Lived Intangible Assets [Line Items]
Useful life	6 years	6 years
Maximum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful life	18 years	18 years