| 4. Property and Equipment, net | 6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun. 30, 2020 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property and Equipment, net | 
 
 Property and equipment, net consists of the following: 
 
 
 Depreciation expense was approximately $200 and $1,000 for the three months ended June 30, 2020 and 2019, respectively, and approximately $800 and $2,000 for the six months ended June 30, 2020 and 2019, respectively. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||