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Commitments and Contingencies - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended			12 Months Ended
	Feb. 29, 2020	Nov. 30, 2019	Jan. 31, 2019	Dec. 31, 2021	Jan. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Feb. 28, 2019
Commitments And Contingencies Disclosure [Line Items]
Debt instrument interest rate								8.00%
Convertible notes issued								$ 0.2
Percentage of selling price per share that can convertible into equity securities sold								80.00%
Converted amount	$ 0.5
Series A Convertible Preferred Stock
Commitments And Contingencies Disclosure [Line Items]
Converted shares	301,685
Share price	$ 1.65816
May 2018 Note
Commitments And Contingencies Disclosure [Line Items]
Maturity description				on or after February 5, 2021, if not converted earlier
July 2018 Note
Commitments And Contingencies Disclosure [Line Items]
Maturity description				on or after February 5, 2021, if not converted earlier
February 2019 Note
Commitments And Contingencies Disclosure [Line Items]
Maturity description				on or after May 16, 2020, if not converted earlier
Unsecured Promissory Note \| January Note
Commitments And Contingencies Disclosure [Line Items]
Maturity description				on or before January 30, 2021
Percentage of final payment on advanced at maturity			3.00%
Debt instrument interest rate							10.00%	10.00%
Unsecured Promissory Note \| January Note \| Maximum
Commitments And Contingencies Disclosure [Line Items]
Notes issued			$ 0.5
Unsecured Promissory Note \| January Note \| Prime Plus
Commitments And Contingencies Disclosure [Line Items]
Debt instrument variable interest rate			4.50%
Unsecured Promissory Note \| November Note
Commitments And Contingencies Disclosure [Line Items]
Maturity description				on or before January 1, 2022
Percentage of final payment on advanced at maturity		3.00%
Debt instrument interest rate					9.25%	9.25%
Unsecured Promissory Note \| November Note \| Maximum
Commitments And Contingencies Disclosure [Line Items]
Notes issued		$ 0.5
Unsecured Promissory Note \| November Note \| Prime Plus
Commitments And Contingencies Disclosure [Line Items]
Debt instrument variable interest rate		4.50%
Unsecured Promissory Note \| February and March 2019 Draws \| January Note
Commitments And Contingencies Disclosure [Line Items]
Borrowings				$ 0.2
Unsecured Promissory Note \| Jan 2020 and Dec 2019 Draws \| November Note
Commitments And Contingencies Disclosure [Line Items]
Borrowings				0.4
Convertible Notes Issued in May and July 2018
Commitments And Contingencies Disclosure [Line Items]
Convertible notes issued				$ 0.3