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CONDENSED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (8,571)	$ (6,913)	$ (30,007)	$ (18,849)
Other comprehensive loss:
Unrealized gain (loss) on securities available-for-sale	203	26	(637)	16
Total comprehensive loss	(8,368)	(6,887)	(30,644)	(18,833)
Preferred stock dividend payable on Series A Convertible Preferred Stock	(6)	(6)	(18)	(18)
Comprehensive loss attributable to common stockholders	$ (8,374)	$ (6,893)	$ (30,662)	$ (18,851)

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