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CONDENSED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (11,223)	$ (10,993)
Other comprehensive loss:
Unrealized gain (loss) on securities available-for-sale	319	(606)
Total comprehensive loss	(10,904)	(11,599)
Preferred stock dividend payable on Series A Convertible Preferred Stock	(6)	(6)
Comprehensive loss attributable to common stockholders	$ (10,910)	$ (11,605)

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