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CONDENSED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (9,731)	$ (8,571)	$ (32,104)	$ (30,007)
Other comprehensive loss:
Unrealized gain (loss) on securities available-for-sale	24	203	(12)	(637)
Total comprehensive loss	(9,707)	(8,368)	(32,116)	(30,644)
Preferred stock dividend payable on Series A Convertible Preferred Stock	(6)	(6)	(18)	(18)
Comprehensive loss attributable to common stockholders	$ (9,713)	$ (8,374)	$ (32,134)	$ (30,662)

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