Fair value measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation

The following table provides a reconciliation of the embedded derivative liability measured at fair value using Level 3 unobservable inputs (in thousands):

	Embedded derivative liability
Balance at December 31, 2019	$	1,856
Initial fair value of embedded derivatives issued		3,415
Change in fair value		1,581
Settlement		(6,852	)
Balance at December 31, 2020	$	—