STOCKHOLDERS' EQUITY - Activity in stockholders' equity (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)			514,003				514,003
Beginning Balance	$ 3,114	$ 4,610	$ 6,351	$ 2,827	$ 3,497	$ 5,279	$ 6,351	$ 5,279
Stock-based compensation	73	88	85	88	113	166
Issuance of common stock upon exercise of warrants, net	1,977		6	1,788
Issuance of shares pursuant to the vesting of restricted stock units, net of shares withheld for taxes						(11)
Issuance of common stock for service						100
Issuance of common stock, net of issuance costs					1,210
Net loss	$ (1,513)	(1,584)	(1,832)	(1,947)	(1,993)	(2,037)	$ (4,929)	(5,977)
Ending Balance (in shares)	1,012,549						1,012,549
Ending Balance	$ 3,651	$ 3,114	$ 4,610	$ 2,756	$ 2,827	$ 3,497	$ 3,651	$ 2,756
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)	515,340	514,463	514,003	24,706	17,563	6,748	514,003	6,748
Beginning Balance	$ 1	$ 1	$ 1	$ 0	$ 0	$ 0	$ 1	$ 0
Issuance of common stock upon exercise of warrants (in shares)	505,502		460	2,625		10,250
Issuance of common stock for fractional shares in the 10:1 reverse stock split (in shares)		877
Issuance of shares pursuant to the vesting of restricted stock units, net of shares withheld for taxes (in shares)						111
Issuance of common stock for service (in shares)						454
Issuance of common stock, net of issuance costs (in shares)					7,143
Ending Balance (in shares)	1,020,842	515,340	514,463	27,331	24,706	17,563	1,020,842	27,331
Ending Balance	$ 1	$ 1	$ 1	$ 0	$ 0	$ 0	$ 1	$ 0
Additional Paid-In Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	136,442	136,354	136,263	129,060	127,737	127,482	136,263	127,482
Stock-based compensation	73	88	85	88	113	166
Issuance of common stock upon exercise of warrants, net	1,977		6	1,788
Issuance of shares pursuant to the vesting of restricted stock units, net of shares withheld for taxes						(11)
Issuance of common stock for service						100
Issuance of common stock, net of issuance costs					1,210
Ending Balance	138,492	136,442	136,354	130,936	129,060	127,737	138,492	130,936
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(133,329)	(131,745)	(129,913)	(126,233)	(124,240)	(122,203)	(129,913)	(122,203)
Net loss	(1,513)	(1,584)	(1,832)	(1,947)	(1,993)	(2,037)
Ending Balance	$ (134,842)	$ (133,329)	$ (131,745)	$ (128,180)	$ (126,233)	$ (124,240)	$ (134,842)	$ (128,180)