Balance Sheet Components
|6 Months Ended|
Jun. 30, 2018
|Organization, Consolidation and Presentation of Financial Statements [Abstract]|
|Supplemental Balance Sheet Disclosures [Text Block]||
Property and equipment, net:
Depreciation and amortization expense for the three months ended June 30, 2017 and 2018 was $17,498 and $9,268, respectively. Depreciation and amortization expense for the six months ended June 30, 2017 and 2018 was $42,330 and $19,225, respectively.
The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef