XML 38 R28.htm IDEA: XBRL DOCUMENT v3.23.2
Marketable Securities: Fair values of our marketable securities aggregated by credit rating (Tables)
3 Months Ended
Jun. 30, 2023
Tables/Schedules  
Fair values of our marketable securities aggregated by credit rating

 

Credit Rating

 

Fair Value

AAA

$

2,564,149

AA

 

6,626,736

AA-

 

20,804,539

A+

 

7,893,562

A

 

9,387,766

A-

 

5,910,654

Total

$

53,187,406