4. Commitments and Contingencies (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jan. 02, 2019
Operating Lease, Right-of-Use Asset	$ 1,010	$ 1,348	$ 1,580
Operating Lease, Liability	2,354		$ 1,771
Operating Lease, Payments	380	$ 294
Lease abandonment charges	$ 1,100
Richardson Property [Member]
Operating lease, term of contract	3 years 11 months
The San Marcos Property [Member]
Operating lease, term of contract	3 months
The Plano Property [Member]
Operating lease, term of contract	2 years 9 months
Operating Lease, Right-of-Use Asset	$ 225
Operating Lease, Liability	$ 225
The Allen Property [Member]
Operating lease, term of contract	4 years 10 months
Operating Lease, Right-of-Use Asset	$ 824
Operating Lease, Liability	$ 824