Fair value (Tables)

6 Months Ended

Jun. 30, 2022

Financial instruments

Schedule of Fair value hierarchy for assets and liabilities

The following table presents the Company’s fair value hierarchy for assets and liabilities measured at fair value as of June 30, 2022 and December 31, 2021:

	June 30, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Recurring
Certificate of deposit	$	—	$	2,518,493	$	—	$	2,518,493
Net asset arising from put/call options		—		—		404,000		404,000

	December 31, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Recurring
Certificate of deposit	$	—	$	2,500,000	$	—	$	2,500,000
Net asset arising from put/call options		—		—		128,000		128,000

Schedule of Net liability arising from put/call options

The activity for the Level 3 asset for the six months ended June 30, 2022:

Net asset arising from put/call options
Balance as of December 31, 2021	$	128,000
Unrealized gain		276,000
Balance as of June 30, 2022	$	404,000