STOCKHOLDERS' EQUITY - Activity in stockholders' equity (Details) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2025 USD ($) shares	Jun. 30, 2025 USD ($) shares	Mar. 31, 2025 USD ($) shares	Sep. 30, 2024 USD ($) shares	Jun. 30, 2024 USD ($) shares	Mar. 31, 2024 USD ($) shares	Sep. 30, 2025 USD ($) shares	Sep. 30, 2024 USD ($) shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares) | shares			1,035,893				1,035,893
Beginning Balance	$ 6,977	$ 2,892	$ 2,511	$ 3,114	$ 4,610	$ 6,351	$ 2,511	$ 6,351
Stock-based compensation	47	90	91	73	88	85
Issuance of common stock, net of transaction costs		$ 1,640	1,066
Issuance of common stock upon exercise of warrants (in shares) | shares		40,000
Issuance of common stock upon exercise of warrants, net of transaction costs	5,622	$ 3,971	889	1,977		6
Net loss	$ (1,298)	(1,616)	(1,665)	(1,513)	(1,584)	(1,832)	$ (4,579)	(4,929)
Ending Balance (in shares) | shares	5,223,015						5,223,015
Ending Balance	$ 11,348	$ 6,977	$ 2,892	$ 3,651	$ 3,114	$ 4,610	$ 11,348	$ 3,651
Stock split, conversion ratio				0.10
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares) | shares	3,764,143	1,775,930	1,035,893	515,340	514,463	514,003	1,035,893	514,003
Beginning Balance	$ 4	$ 2	$ 1	$ 1	$ 1	$ 1	$ 1	$ 1
Issuance of common stock, net of issuance costs (in shares) | shares		489,341	365,319				854,660
Issuance of common stock, net of transaction costs		$ 1
Issuance of common stock upon exercise of warrants (in shares) | shares	1,458,872	1,498,872	374,718	505,502		460
Issuance of common stock upon exercise of warrants, net of transaction costs	$ 1	$ 1	$ 1
Issuance of common stock for fractional shares in the 10:1 reverse stock split (in shares) | shares					877
Ending Balance (in shares) | shares	5,223,015	3,764,143	1,775,930	1,020,842	515,340	514,463	5,223,015	1,020,842
Ending Balance	$ 5	$ 4	$ 2	$ 1	$ 1	$ 1	$ 5	$ 1
Additional Paid-In Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	146,351	140,652	138,607	136,442	136,354	136,263	138,607	136,263
Stock-based compensation	47	90	91	73	88	85
Issuance of common stock, net of transaction costs		1,639	1,066
Issuance of common stock upon exercise of warrants, net of transaction costs	5,621	3,970	888	1,977		6
Ending Balance	152,019	146,351	140,652	138,492	136,442	136,354	152,019	138,492
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(139,378)	(137,762)	(136,097)	(133,329)	(131,745)	(129,913)	(136,097)	(129,913)
Net loss	(1,298)	(1,616)	(1,665)	(1,513)	(1,584)	(1,832)
Ending Balance	$ (140,676)	$ (139,378)	$ (137,762)	$ (134,842)	$ (133,329)	$ (131,745)	$ (140,676)	$ (134,842)