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Trust Account and Fair Value Measurement (Tables)
6 Months Ended
Jun. 30, 2019
Fair Value Disclosures [Abstract]  
Schedule of assets measured at fair value on a recurring basis
           Quoted Price 
           Prices in 
   Carrying value at   Gross Unrealized   Active Markets 
Description  June 30,
 2019
   Holding Gains   (Level 1) 
Assets:            
Cash and money market funds  $29,000   $-   $29,000 
U.S. government treasury bills   304,988,000    166,000    305,154,000 
Total  $305,017,000   $166,000   $305,183,000