|3 Months Ended|
Mar. 31, 2019
|Short-term Investments [Abstract]|
4. Short-Term Investments
The following summarizes information about short term investments at March 31, 2019 and December 31, 2018, respectively:
The entire disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef