Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net loss	$ (2,267)	$ (3,501)
Depreciation	19	22
Reduction in the carrying amount of right-of-use assets	87	79
Share-based compensation	204	278
Allowance for doubtful accounts	(24)	0
Accounts receivable	29	48
Prepaid expenses and other current assets	43	20
Accounts payable	155	345
Accrued expenses and other current liabilities	311	226
Deferred revenue	0	(1)
Operating lease liability	(87)	(76)
Net cash used in operating activities	(1,530)	(2,560)
Purchase of property and equipment	0	(10)
Net cash used in investing activities	0	(10)
Proceeds from sales of common stock	1,466	244
Issuance costs of sale of common stock	(90)	(180)
Net cash provided by financing activities	1,376	64
Net change in cash and cash equivalents	(154)	(2,506)
Cash and cash equivalents at beginning of period	1,103	7,363
Cash and cash equivalents at end of period	949	4,857
Unpaid issuance costs of common stock	$ 181	$ 6