SEGMENT AND GEOGRAPHIC DATA Geographic Data Reporting (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 26,414	$ 17,015	$ 17,015	$ 42,601	$ 33,230	$ 33,230
Long-lived assets			5			5	$ 811
Net assets	34,024	42,259	$ 42,259	34,024	42,259	$ 42,259	$ 34,024
United Kingdon
Segment Reporting Information [Line Items]
Revenue	4,488	3,829		8,499	7,364
Net assets	2,447	3,538		2,447	3,538
Australia
Segment Reporting Information [Line Items]
Revenue	15,289	8,476		22,057	16,115
Net assets	3,745	3,414		3,745	3,414
United States
Segment Reporting Information [Line Items]
Revenue	3,689	3,281		6,540	6,815
Net assets	22,862	30,069		22,862	30,069
Other
Segment Reporting Information [Line Items]
Revenue	2,948	1,429		5,505	2,936
Net assets	$ 4,970	$ 5,238		$ 4,970	$ 5,238