4. Property and Equipment |
6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property and Equipment |
At June 30, 2018 and December 31, 2017, property and equipment consists of the following:
Depreciation expense for the six-month periods ended June 30, 2018 and 2017 was $17,000 and $4,000, respectively. Depreciation expense for the three-month periods ended June 30, 2018 and 2017 was $9,000 and $2,000, respectively. |