SEGMENT AND GEOGRAPHIC DATA - Geographic Data Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Revenue	$ 39,398	$ 48,686	$ 127,367	$ 157,326
Long-lived assets, net of accumulated depreciation and amortization	9,043	10,064	9,043	10,064
Net assets	46,636	45,792	46,636	45,792
Australia
Segment Reporting Information [Line Items]
Revenue	23,620	27,113	73,414	82,223
Long-lived assets, net of accumulated depreciation and amortization	54	74	54	74
Net assets	11,846	8,744	11,846	8,744
United States
Segment Reporting Information [Line Items]
Revenue	6,706	11,839	23,501	39,600
Long-lived assets, net of accumulated depreciation and amortization	8,137	9,070	8,137	9,070
Net assets	22,957	25,204	22,957	25,204
United Kingdon
Segment Reporting Information [Line Items]
Revenue	5,807	5,822	19,503	23,542
Long-lived assets, net of accumulated depreciation and amortization	39	49	39	49
Net assets	4,401	3,529	4,401	3,529
Other
Segment Reporting Information [Line Items]
Revenue	3,265	3,912	10,949	11,961
Long-lived assets, net of accumulated depreciation and amortization	813	871	813	871
Net assets	$ 7,432	$ 8,315	$ 7,432	$ 8,315