SEGMENT AND GEOGRAPHIC DATA Geographic Data Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 17,015	$ 14,517	$ 33,230	$ 28,472
Long-lived assets	5	202	5	202
Net assets	42,259	8,160	42,259	8,160
United Kingdon
Segment Reporting Information [Line Items]
Revenue	3,829	2,682	7,364	5,298
Long-lived assets	5	0	5	0
Net assets	3,538	1,865	3,538	1,865
Australia
Segment Reporting Information [Line Items]
Revenue	8,476	5,499	16,115	10,836
Long-lived assets	0	0	0	0
Net assets	3,414	2,071	3,414	2,071
United States
Segment Reporting Information [Line Items]
Revenue	3,281	3,943	6,815	8,047
Long-lived assets	0	201	0	201
Net assets	30,069	2,292	30,069	2,292
Other
Segment Reporting Information [Line Items]
Revenue	1,429	2,393	2,936	4,291
Long-lived assets	0	1	0	1
Net assets	$ 5,238	$ 1,932	$ 5,238	$ 1,932