XML 30 R19.htm IDEA: XBRL DOCUMENT v3.20.2
Fair Value Measurement (Tables)
6 Months Ended
Jun. 30, 2020
Fair Value Disclosures [Abstract]  
Fair Value Bond Portfolio
    Fair Value Measurement
June 30, 2020 Fair Value Level 3
     
Bond portfolio $17,619,937 $17,619,937