Basis of presentation (Details) $ in Thousands			12 Months Ended
	Aug. 16, 2021 USD ($) shares	Oct. 16, 2020 USD ($) shares	Dec. 31, 2021 USD ($)	Jun. 30, 2022 USD ($) Manufacturer	May 01, 2020 USD ($)	Mar. 13, 2020 USD ($)
Basis of presentation [Abstract]
Proceeds from Public Offering	$ 11,200	$ 8,700
Shares sold in Public Offering (in shares) | shares	842,375	1,380,000
Basis of presentation [Abstract]
Number of manufacturers in China and Thailand | Manufacturer				2
Gain from employee retention credit			$ 1,500
Employee retention credit receivable			$ 1,500	$ 1,500
PPP Loan [Member]
Basis of presentation [Abstract]
Face amount					$ 2,200
Sienna Credit Facility [Member]
Basis of presentation [Abstract]
Maximum borrowing capacity						$ 10,000