Warrants and derivative liability (Details)			6 Months Ended
	Jun. 30, 2022 USD ($) shares	Sep. 15, 2021 USD ($) item $ / shares shares	Jun. 30, 2022 USD ($)	Mar. 14, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)
Class of Warrant or Right [Line Items]
Warrants exercised | shares	0
Expected volatility
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	97		97		95
Expected dividends
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0		0		0
Expected term
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	5.00		5.00		5.00
Risk-free rate
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	3.01		3.01		1.26
Loan agreement
Class of Warrant or Right [Line Items]
Maximum borrowing capacity		$ 50,000,000.0
First Tranche Term Loan
Class of Warrant or Right [Line Items]
Issued warrant exercisable | shares		147,600
Exercise price | $ / shares		$ 2.29
Derivative liability, included in other long-term liabilities		$ 300,000
First Tranche Term Loan | Expected volatility
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input		95
First Tranche Term Loan | Expected dividends
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input		0
First Tranche Term Loan | Expected term
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input		5.00
First Tranche Term Loan | Risk-free rate
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input		0.81
Second Tranche Term Loan
Class of Warrant or Right [Line Items]
Issued warrant exercisable | shares				98,399
Exercise price | $ / shares				$ 2.29
Change in fair value of warrants			$ 100,000
Derivative liability, included in other long-term liabilities				$ 200,000
Second Tranche Term Loan | Expected volatility
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input				93
Second Tranche Term Loan | Expected dividends
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input				0
Second Tranche Term Loan | Expected term
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input				5.00
Second Tranche Term Loan | Risk-free rate
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input				2.10
Additional Warrants
Class of Warrant or Right [Line Items]
Warrants obligated to be issued upon the funding of the second, third and fourth tranche term loans | item		344,398
Derivative liability, included in other long-term liabilities	$ 300,000		$ 300,000