INCOME TAXES - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Amount
Federal statutory rate	$ (1,806)
State and local income taxes, net of federal income tax effect	$ (318)
Effective Income Tax Rate Reconciliation, State and Local Jurisdiction, Contribution Greater than 50 Percent, Tax Effect [Extensible Enumeration]	stpr:NJ
Total foreign tax effects	$ 1,258
Tax credits
Research and development tax credits	240
Incentive stock options	151
Restricted stock units shortfall	136
Deferred true-ups	(348)
Expiring Federal NOL	362
Other	5
Total nontaxable or nondeductible items	306
Federal R&D credit	(120)
Consolidation and intercompany eliminations	(1,470)
Total	$ (401)	$ (1,691)
Tax Jurisdiction of Domicile [Extensible Enumeration]	United States
Percent
Federal statutory rate	21.00%	21.00%
State taxes, net of federal benefit	3.70%	2.60%
Foreign rate differential		3.10%
Permanent items		(3.60%)
Other rate change and true-up		0.30%
NJ NOL and R&D credit write-off		(8.40%)
True up of foreign NOLs		4.20%
NJ Amended NOL		1.80%
Uncertain tax positions		(0.60%)
Change in valuation allowance		(13.10%)
R&D credit		1.10%
Sale of 2023 NJ R&D & NOL		7.60%
Total foreign tax effects	(14.60%)
Tax credits
Research and development tax credits	(2.80%)
Incentive stock options	(1.80%)
Restricted stock units shortfall	(1.60%)
Deferred true-ups	4.10%
Expiring Federal NOL	(4.20%)
Other	(0.10%)
Total nontaxable or nondeductible items	(3.60%)
Federal R&D credit	1.40%
Consolidation and intercompany eliminations	17.10%
Effective income tax rate	4.70%	7.60%
United States
Amount
Change in valuation allowance	$ 1,509
Percent
Change in valuation allowance	(17.50%)
Germany
Amount
Foreign rate differential	$ (466)
Foreign-exchange tax effects	(2,060)
Change in valuation allowance	3,117
Foreign deferred tax adjustments	$ 494
Percent
Foreign rate differential	5.40%
Foreign-exchange tax effects	24.00%
Change in valuation allowance	(36.30%)
Foreign deferred tax adjustments	(5.70%)
Other
Amount
Total foreign tax effects	$ 173
Percent
Total foreign tax effects	(2.00%)