SEGMENT AND GEOGRAPHIC DATA - Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) Segment	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | Segment			3
Revenue from external customers	$ 25,413	$ 25,762	$ 74,117	$ 68,363
Inter-segment revenue	0	0	0	0
Revenue	25,413	25,762	74,117	68,363
Adjusted net revenue, from external customers	9,070	11,396	27,798	32,451
Inter-segment adjusted net revenue	0	0	0	0
Total adjusted net revenue	9,070	11,396	27,798	32,451
EBITDA (loss)	(981)	430	(1,962)	(2,433)
Depreciation and amortization	(25)	(23)	(73)	(62)
Segment Reporting Information, Intersegment Interest Income (Expense), Net	0	0	0	0
Interest income, net	14	88	133	526
(Loss) income from continuing operations before provision for income taxes	(992)	495	(1,902)	(1,969)
Accounts receivable, net	11,916		11,916		$ 12,795	$ 15,691
Total assets	43,995		43,995		$ 46,704	47,149
Operating Segments | Americas
Segment Reporting Information [Line Items]
Revenue from external customers	1,934	3,510	7,328	10,632
Inter-segment revenue	97	12	97	75
Revenue	2,031	3,522	7,425	10,707
Adjusted net revenue, from external customers	1,678	3,205	6,431	9,558
Inter-segment adjusted net revenue	97	11	97	72
Total adjusted net revenue	1,775	3,216	6,528	9,630
EBITDA (loss)	(789)	3	(1,767)	17
Depreciation and amortization	(5)	(5)	(14)	(14)
Segment Reporting Information, Intersegment Interest Income (Expense), Net	0	0	0	0
Interest income, net	(4)	0	(6)	0
(Loss) income from continuing operations before provision for income taxes	(798)	(2)	(1,787)	3
Accounts receivable, net	1,353		1,353			3,295
Total assets	3,809		3,809			5,122
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Revenue from external customers	19,877	17,436	55,661	43,569
Inter-segment revenue	0	0	6	0
Revenue	19,877	17,436	55,667	43,569
Adjusted net revenue, from external customers	5,002	5,574	14,331	15,584
Inter-segment adjusted net revenue	0	(12)	6	(70)
Total adjusted net revenue	5,002	5,562	14,337	15,514
EBITDA (loss)	517	821	1,879	1,135
Depreciation and amortization	(13)	(12)	(38)	(27)
Segment Reporting Information, Intersegment Interest Income (Expense), Net	(81)	(95)	(240)	(296)
Interest income, net	2	(4)	2	(4)
(Loss) income from continuing operations before provision for income taxes	425	710	1,603	808
Accounts receivable, net	7,558		7,558			8,594
Total assets	14,022		14,022			11,930
Operating Segments | Europe
Segment Reporting Information [Line Items]
Revenue from external customers	3,602	4,816	11,128	14,162
Inter-segment revenue	0	(1)	0	2
Revenue	3,602	4,815	11,128	14,164
Adjusted net revenue, from external customers	2,390	2,617	7,036	7,309
Inter-segment adjusted net revenue	(97)	0	(103)	3
Total adjusted net revenue	2,293	2,617	6,933	7,312
EBITDA (loss)	(40)	178	323	(139)
Depreciation and amortization	(6)	(5)	(17)	(18)
Segment Reporting Information, Intersegment Interest Income (Expense), Net	0	0	0	0
Interest income, net	0	0	0	0
(Loss) income from continuing operations before provision for income taxes	(46)	173	306	(157)
Accounts receivable, net	3,005		3,005			3,849
Total assets	7,597		7,597			7,003
Corporate
Segment Reporting Information [Line Items]
Revenue from external customers	0	0	0	0
Inter-segment revenue	0	0	0	0
Revenue	0	0	0	0
Adjusted net revenue, from external customers	0	0	0	0
Inter-segment adjusted net revenue	0	0	0	0
Total adjusted net revenue	0	0	0
EBITDA (loss)	(669)	(572)	(2,397)	(3,446)
Depreciation and amortization	(1)	(1)	(4)	(3)
Segment Reporting Information, Intersegment Interest Income (Expense), Net	81	95	240	296
Interest income, net	16	92	137	530
(Loss) income from continuing operations before provision for income taxes	(573)	(386)	(2,024)	(2,623)
Accounts receivable, net	0		0			(47)
Total assets	18,567		18,567			23,094
Inter-Segment Elimination
Segment Reporting Information [Line Items]
Revenue from external customers	0	0	0	0
Inter-segment revenue	(97)	(11)	(103)	(77)
Revenue	(97)	(11)	(103)	(77)
Adjusted net revenue, from external customers	0	0	0	0
Inter-segment adjusted net revenue	0	1	0	(5)
Total adjusted net revenue	0	1	0	(5)
EBITDA (loss)	0	0	0	0
Depreciation and amortization	0	0	0	0
Segment Reporting Information, Intersegment Interest Income (Expense), Net	0	0	0	0
Interest income, net	0	0	0	0
(Loss) income from continuing operations before provision for income taxes	0	$ 0	0	$ 0
Accounts receivable, net	0		0			0
Total assets	$ 0		$ 0			$ 0