Common Stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Nov. 26, 2021	Dec. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Common Stock, Shares Authorized		60,000,000	60,000,000
Shares available for issuance		44,405,107
Share Price		$ 2.30	$ 1.25
Warrants exercise price		$ 8.00	$ 8.00
2020 Capital Transactions
Class of Stock [Line Items]
Number of shares issued			151,027
Warrants to purchase shares of common stock			151,027
Warrants exercise price			$ 3.70
Gross and net proceeds from issuance			$ 1.1
2021 Capital Transactions
Class of Stock [Line Items]
Gross and net proceeds from issuance	$ 0.3
2021 Capital Transactions | Existing Investors
Class of Stock [Line Items]
Gross and net proceeds from issuance		$ 2.6
Employee Stock Purchase Plan [Member]
Class of Stock [Line Items]
Shares available for issuance		2,966	2,966
Employee Stock Purchase Plan Withholding Period		6 months
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent		85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		7,500
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period		4,534
Employee stock purchase plan, share issue period		6 months
Common Stock | 2020 Capital Transactions
Class of Stock [Line Items]
Number of shares issued			125,000
Share Price			$ 4.00
Gross and net proceeds from issuance			$ 1.0
Common Stock | 2021 Capital Transactions
Class of Stock [Line Items]
Gross and net proceeds from issuance	0.2
Common Stock | 2021 Capital Transactions | Existing Investors
Class of Stock [Line Items]
Shares Issued, Price Per Share		$ 2.00
Number of shares issued		1,300,000
Warrants to purchase shares of common stock		650,000
Share Price		$ 2.00
Number of common stock for each unit		1
Number of warrant for each unit		0.5
Gross and net proceeds from issuance		$ 1.8
Warrant liability | 2020 Capital Transactions
Class of Stock [Line Items]
Gross and net proceeds from issuance			$ 0.1
Warrant liability | 2021 Capital Transactions
Class of Stock [Line Items]
Gross and net proceeds from issuance	$ 0.1
Warrant liability | 2021 Capital Transactions | Existing Investors
Class of Stock [Line Items]
Gross and net proceeds from issuance		$ 0.8
Warrant One
Class of Stock [Line Items]
Number of shares issued			516,877
Shares Issued As A Result Of Exercise Of Warrants			516,877
Proceeds from Warrant Exercises			$ 1.9
Warrants exercise price			$ 3.70
Warrant Two
Class of Stock [Line Items]
Number of shares issued			414,000
Shares Issued As A Result Of Exercise Of Warrants			414,000
Proceeds from Warrant Exercises			$ 0.8
Warrants exercise price			$ 2.00
Warrant Three [Member]
Class of Stock [Line Items]
Number of shares issued			25,948
Chief executive officer | Common Stock | 2021 Capital Transactions
Class of Stock [Line Items]
Shares Issued, Price Per Share	$ 3.45
Number of shares issued	72,464
Warrants to purchase shares of common stock	36,232
Share Price	$ 3.45
Number of common stock for each unit	1
Number of warrant for each unit	0.5