Stockholders' Equity - June 2021 Equity Offering (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended			9 Months Ended
	Jun. 30, 2021	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount paid for clearing fees	$ 18
Offering costs paid on the issuance of common stock and warrants		$ 0		$ 1	$ 334	$ 470
Institutional investors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of common stock (in shares)	990,100
Sale of common stock (USD per share)	$ 5.05
Amount paid for placement agent commissions	$ 400
Amount paid related to expenses for registered direct offering and concurrent private placement	51
Offering costs paid on the issuance of common stock and warrants			$ 469
Proceeds from sale of common stock and warrants	$ 4,500