CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (30,527)	$ (23,465)
Adjustments to reconcile net loss to net cash flows from operating activities:
Amortization of right to use asset	41	36
Stock-based compensation expense	2,076	1,799
Non-cash interest expense	489	87
Change in fair value of derivative	(138)	0
Changes in operating assets and liabilities:
Prepaid expenses and other assets	65	(1,594)
Accounts payable, accrued expenses and other liabilities	3,686	2,536
Net cash from operating activities	(24,308)	(20,601)
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash from investing activities	0	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from convertible notes payable - related party	30,000
Net proceeds from issuance of common stock and warrants	6,814	263
Net cash from financing activities	36,814	263
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	12,506	(20,338)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	27,142	47,480
CASH AND CASH EQUIVALENTS, END OF PERIOD	39,648	27,142
NONCASH FINANCING ACTIVITIES:
Payment of preferred stock dividends in common stock	171	137
Fair value of derivatives regarding related party convertible notes payable	1,268	0
Reclassification of accrued bonus to additional paid in capital	$ 60	$ 0