2. Significant Accounting Policies (Tables)
|3 Months Ended|
Mar. 31, 2019
|Accounting Policies [Abstract]|
|Schedule of legal entities||
|Schedule of net income (loss) per share||
Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef