Warrants (Tables)

12 Months Ended

Dec. 31, 2022

Proceeds from Issuance of Preferred Stock, Preference Stock, and Warrants [Abstract]

Summary of outstanding warrants

The following table shows the common stock warrants outstanding as of December 31, 2022:

Warrant Issuance Date	Shares of Common Stock Underlying Warrants		Exercise Price/Share		Expiration Date
August 2014		159	$	4,231.80	2024
March 2016		251		496.80	2026
March 2018		100		1,391.40	2028
June 2020		3,574		139.878	2030
March 2022		270,415		24.74	2024
March 2022		270,415		24.74	2027
December 2022		1,290,322		7.50	2024
December 2022		1,290,322		7.50	2027
December 2022		38,709		9.6875	2027