CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (41,066)	$ (38,776)
Adjustments to reconcile net loss to net cash from operating activities:
Amortization of right to use asset	33	32
Stock-based compensation expense	2,261	2,867
Non-cash interest expense	697	410
Change in fair value of derivatives	432	(557)
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(90)	101
Accrued interest on convertible notes payable and convertible line of credit - related party	2,097	623
Accounts payable, accrued expenses and other liabilities	2,671	4,244
Net cash from operating activities	(32,965)	(31,056)
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash from investing activities	0	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from convertible line of credit - related party	30,000	10,000
Net proceeds from exercise of common stock purchase warrants	10,033	0
Net cash from financing activities	40,033	10,000
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	7,068	(21,056)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	18,592	39,648
CASH AND CASH EQUIVALENTS, END OF PERIOD	25,660	18,592
NONCASH FINANCING ACTIVITIES:
Payment of preferred stock dividends in common stock	120	97
Reclassification of accrued bonus to additional paid in capital	210	200
Noncash right to use lease asset	0	111
Common stock purchase warrants issued in connection with related party line of credit	$ 671	$ 899