Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (5,692)	$ (7,231)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	563	765
Depreciation and amortization	291	323
Fair value of common stock issued for services	11
Fair value of warrants issued for services	20	808
Change in fair value of warrant liability, net of issuance costs of $645		(8,761)
Excess warrant fair value		6,453
Changes in operating assets and liabilities:
Accounts receivable	(193)	130
Operating lease liabilities, net	(62)	(52)
Prepaid expenses and other current assets	62	375
Deposits	41	79
Accounts payable	(117)	(86)
Accrued expenses	(206)	37
Employee retention credit liability		1,175
Other liabilities	(2)	2
Contract liability	(280)	(415)
Net cash used in operating activities	(5,564)	(6,398)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of property and equipment	(211)	(484)
Payment for asset purchase		(50)
Net cash used in investing activities	(211)	(534)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of warrants	7,500
Proceeds from exercise of pre-funded warrants	3,941	8,000
Payments for issuance costs	(406)	(645)
Net cash provided by financing activities	11,035	7,355
Net increase (decrease) in cash and cash equivalents	5,260	423
Cash and cash equivalents at beginning of year	1,643	3,519
Cash and cash equivalents at end of year	6,903	3,942
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest	7
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Fair value of warrants issued in asset purchase		$ 116