SEGMENT AND GEOGRAPHIC DATA - Geographic Data Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Revenue	$ 44,897	$ 56,723	$ 87,969	$ 108,640
Long-lived assets, net of accumulated depreciation and amortization	9,408	10,064	9,408	10,064
Net assets	46,684	45,792	46,684	45,792
Australia
Segment Reporting Information [Line Items]
Revenue	25,422	26,724	49,794	55,110
Long-lived assets, net of accumulated depreciation and amortization	61	74	61	74
Net assets	10,904	8,744	10,904	8,744
United States
Segment Reporting Information [Line Items]
Revenue	8,125	13,866	16,795	27,762
Long-lived assets, net of accumulated depreciation and amortization	8,452	9,070	8,452	9,070
Net assets	23,987	25,204	23,987	25,204
United Kingdon
Segment Reporting Information [Line Items]
Revenue	7,547	11,946	13,696	17,720
Long-lived assets, net of accumulated depreciation and amortization	43	49	43	49
Net assets	3,866	3,529	3,866	3,529
Other
Segment Reporting Information [Line Items]
Revenue	3,803	4,187	7,684	8,048
Long-lived assets, net of accumulated depreciation and amortization	852	871	852	871
Net assets	$ 7,927	$ 8,315	$ 7,927	$ 8,315