Stockholders' Equity - June 2022 and December 2021 Private Placement (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended			3 Months Ended		9 Months Ended
	Dec. 16, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Sep. 30, 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
Warrants issued (in shares)							229,414	310,860
June 2022 Private Placement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of common stock (in shares)		1,313,462
Sale of common stock (USD per share)					$ 1.30		$ 1.30
Securities called by warrants (in shares)					2,692,310		2,692,310
Exercise price of common stock (USD per share)					$ 1.30		$ 1.30
Amount paid for placement agent commissions		$ 252
Amount paid related to expenses for registered direct offering and concurrent private placement		35
Amount paid for clearing fees		47
Offering costs paid on the issuance of common stock and warrants		334
Proceeds from sale of common stock and warrants		$ 3,200
Estimated proceeds from issuance of warrants					$ 3,500
June 2022 Private Placement | Pre-Funded Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Securities called by warrants (in shares)					1,378,848		1,378,848
Exercise price of common stock (USD per share)					$ 0.0001		$ 0.0001
June 2022 Private Placement | Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Securities called by warrants (in shares)					2,692,310		2,692,310
Exercise price of common stock (USD per share)					$ 1.30		$ 1.30
December 2021 Private Placement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of common stock (in shares)			1,193,185
Sale of common stock (USD per share)			$ 3.52
Securities called by warrants (in shares)					1,278,413		1,278,413
Exercise price of common stock (USD per share)					$ 3.52		$ 3.52
Amount paid for placement agent commissions			$ 360
Amount paid related to expenses for registered direct offering and concurrent private placement			42
Amount paid for clearing fees			97
Offering costs paid on the issuance of common stock and warrants			499
Proceeds from sale of common stock and warrants			$ 4,000
Estimated proceeds from issuance of warrants					$ 4,500
December 2021 Private Placement | Pre-Funded Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Securities called by warrants (in shares)			85,228
Exercise price of common stock (USD per share)			$ 0.0001
Warrants issued (in shares)	85,228
December 2021 Private Placement | Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Securities called by warrants (in shares)			1,278,413
Exercise price of common stock (USD per share)			$ 3.52