Grant Expense, Net (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) grant	Dec. 31, 2019 USD ($)
Other Income and Expenses [Abstract]
Number of grants approved | grant	2
Grants approval amount	$ 7,000
Grant expense (income), net	913	$ (469)
Grant income	381	984
Grant costs	1,294	515
Grant payments received	1,531	3,209
Deferred grant income	1,136	0
Grants receivable	$ 131	$ 326