SEGMENT AND GEOGRAPHIC DATA - Segment Information (Details) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2026 USD ($)	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2026 USD ($) Segment	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Segment Reporting [Line Items]
Revenues	$ 53,920			$ 47,959			$ 158,922	$ 115,366
Cost of revenues	30,691			27,332			92,343	59,706
Gross profit	23,229			20,627			66,579	55,660
Salaries and related	(18,223)			(16,135)			(54,930)	(45,317)
Office and general	(5,485)			(4,819)			(14,955)	(10,176)
Marketing and promotion	(997)			(913)			(2,920)	(2,814)
Operating expenses depreciation and amortization	(331)			(404)			(966)	(932)
Operating loss	(1,807)			(1,644)			(7,192)	(3,579)
EBITDA (loss)	(717)			(930)			(4,465)	(2,594)
Total depreciation and amortization	(893)			(666)			(2,769)	(1,194)
Interest income (expense), net	0			81			(13)	206
(Benefit from) provision for income taxes	21			(249)			17	(626)
Net loss	(1,589)	$ (1,848)	$ (3,793)	(1,764)	$ (688)	$ (1,756)	(7,230)	(4,208)
Accounts receivable, net	31,823			35,220			31,823	35,220	$ 35,220
Long-lived assets, net of accumulated depreciation and amortization	23,766			26,242			23,766	26,242	26,242
Total assets	104,616			113,231			$ 104,616	113,231	$ 113,231
Number of reportable segments | Segment							4
Building Solutions
Segment Reporting [Line Items]
Revenues	16,347			9,603			$ 42,557	9,603
Business Services
Segment Reporting [Line Items]
Revenues	33,842			37,038			105,232	104,445
Energy Services
Segment Reporting [Line Items]
Revenues	3,731			1,318			11,133	1,318
Operating Segments | Building Solutions
Segment Reporting [Line Items]
Revenues	16,347			9,603			42,557	9,603
Cost of revenues	13,019			7,919			34,430	7,919
Gross profit	3,328			1,684			8,127	1,684
Salaries and related	(1,611)			(761)			(4,989)	(761)
Office and general	(1,193)			(488)			(3,434)	(488)
Marketing and promotion	(15)			(9)			(38)	(9)
Operating expenses depreciation and amortization	(104)			(40)			(295)	(40)
Operating loss	405			386			(629)	386
EBITDA (loss)	276			495			(1,055)	495
Total depreciation and amortization	(258)			(109)			(789)	(109)
Interest income (expense), net	(168)			(51)			(434)	(51)
(Benefit from) provision for income taxes	0			0			0	0
Net loss	(150)			335			(2,278)	335
Accounts receivable, net	7,703			8,671			7,703	8,671
Long-lived assets, net of accumulated depreciation and amortization	4,090			4,320			4,090	4,320
Total assets	32,434			34,105			32,434	34,105
Operating Segments | Business Services
Segment Reporting [Line Items]
Revenues	33,842			37,038			105,232	104,445
Cost of revenues	15,671			18,408			51,800	50,782
Gross profit	18,171			18,630			53,432	53,663
Salaries and related	(14,760)			(14,570)			(44,221)	(42,925)
Office and general	(2,022)			(2,154)			(6,183)	(5,437)
Marketing and promotion	(977)			(901)			(2,856)	(2,803)
Operating expenses depreciation and amortization	(216)			(350)			(621)	(872)
Operating loss	196			655			(449)	1,626
EBITDA (loss)	40			797			(903)	1,255
Total depreciation and amortization	(216)			(350)			(621)	(872)
Interest income (expense), net	(174)			(128)			(501)	(406)
(Benefit from) provision for income taxes	(44)			(3)			261	(451)
Net loss	(394)			316			(1,764)	(474)
Accounts receivable, net	20,438			22,398			20,438	22,398
Long-lived assets, net of accumulated depreciation and amortization	7,438			7,934			7,438	7,934
Total assets	39,400			43,418			39,400	43,418
Operating Segments | Energy Services
Segment Reporting [Line Items]
Revenues	3,731			1,318			11,133	1,318
Cost of revenues	1,927			972			5,890	972
Gross profit	1,804			346			5,243	346
Salaries and related	(628)			(231)			(1,894)	(231)
Office and general	(476)			(158)			(1,360)	(158)
Marketing and promotion	(5)			(3)			(26)	(3)
Operating expenses depreciation and amortization	0			(8)			(19)	(8)
Operating loss	695			(54)			1,944	(54)
EBITDA (loss)	960			140			2,910	140
Total depreciation and amortization	(333)			(169)			(1,104)	(169)
Interest income (expense), net	(43)			(39)			(135)	(39)
(Benefit from) provision for income taxes	0			0			0	0
Net loss	584			(68)			1,671	(68)
Accounts receivable, net	3,653			4,045			3,653	4,045
Long-lived assets, net of accumulated depreciation and amortization	5,735			7,235			5,735	7,235
Total assets	13,072			12,526			13,072	12,526
Operating Segments | Investments
Segment Reporting [Line Items]
Revenues	160			53			477	53
Cost of revenues	74			33			223	33
Gross profit	86			20			254	20
Salaries and related	(10)			0			(10)	0
Office and general	(100)			(26)			(349)	(26)
Marketing and promotion	0			0			0	0
Operating expenses depreciation and amortization	0			0			0	0
Operating loss	(24)			(6)			(105)	(6)
EBITDA (loss)	366			(6)			357	(6)
Total depreciation and amortization	(75)			(33)			(224)	(33)
Interest income (expense), net	241			89			631	89
(Benefit from) provision for income taxes	0			0			0	0
Net loss	532			50			764	50
Accounts receivable, net	0			0			0	0
Long-lived assets, net of accumulated depreciation and amortization	6,362			6,586			6,362	6,586
Total assets	21,433			21,689			21,433	21,689
Inter-Segment Elimination
Segment Reporting [Line Items]
Revenues	(160)			(53)			(477)	(53)
Cost of revenues	0			0			0	0
Gross profit	(160)			(53)			(477)	(53)
Salaries and related	(1,214)			(573)			(3,816)	(1,400)
Office and general	(1,694)			(1,993)			(3,629)	(4,067)
Marketing and promotion	0			0			0	1
Operating expenses depreciation and amortization	(11)			(6)			(31)	(12)
Operating loss	(3,079)			(2,625)			(7,953)	(5,531)
EBITDA (loss)	(2,359)			(2,356)			(5,774)	(4,478)
Total depreciation and amortization	(11)			(5)			(31)	(11)
Interest income (expense), net	144			210			426	613
(Benefit from) provision for income taxes	65			(246)			(244)	(175)
Net loss	(2,161)			(2,397)			(5,623)	(4,051)
Accounts receivable, net	29			106			29	106
Long-lived assets, net of accumulated depreciation and amortization	141			167			141	167
Total assets	$ (1,723)			$ 1,493			$ (1,723)	$ 1,493