SEGMENT AND GEOGRAPHIC DATA - Geographic Data Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenue	$ 51,917	$ 34,461
Long-lived assets, net of accumulated depreciation and amortization	9,852	10,078
Net assets	42,792	39,316
Australia
Segment Reporting Information [Line Items]
Revenue	28,386	23,474
Long-lived assets, net of accumulated depreciation and amortization	27	29
Net assets	9,472	7,925
United States
Segment Reporting Information [Line Items]
Revenue	13,895	4,248
Long-lived assets, net of accumulated depreciation and amortization	9,739	9,968
Net assets	22,624	21,510
United Kingdon
Segment Reporting Information [Line Items]
Revenue	5,773	3,871
Long-lived assets, net of accumulated depreciation and amortization	56	42
Net assets	2,931	2,729
Other
Segment Reporting Information [Line Items]
Revenue	3,863	2,868
Long-lived assets, net of accumulated depreciation and amortization	30	39
Net assets	$ 7,765	$ 7,152