XML 28 R17.htm IDEA: XBRL DOCUMENT v3.19.1
3. Cash and Investment Held in Trust Account (Tables)
12 Months Ended
Dec. 31, 2018
Receivables [Abstract]  
Cash and investment held in trust
   Carrying Value as of December 31, 2018   Gross Unrealized Holding Gain   Fair Value as of December 31, 2018 
             
Available-for-sale marketable securities:               
U.S. Treasury Securities  $46,342,279   $27,179   $46,369,458