Revenues (Detail Narratives) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2019 USD ($) Number	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Customer deposits		$ 304		$ 304		$ 575
Revenue		4,335	$ 3,294	8,374	$ 7,049
Joint Development Agreement [Member] | Sumitomo Corporation of Americas [Member]
Initial term agreement	10 years
Commitment fee per agreement	$ 250
Contingent fees per agreement	$ 125
Number of contingent fee payments | Number	2
Refundable commitment fee per agreement	$ 250
Revenue		$ 116		$ 182