Quarterly report pursuant to Section 13 or 15(d)

Restricted Cash Equivalents and Investments (Schedule of Estimated Fair Value of Available-for-Sale Securities) (Details)

v3.23.1
Restricted Cash Equivalents and Investments (Schedule of Estimated Fair Value of Available-for-Sale Securities) (Details) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost $ 3,707,759 $ 3,694,069
Estimated Market Value 3,683,323 3,645,228
Investments [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost, Due within one year 2,042,493  
Amortized Cost 2,042,493 2,715,607
Estimated Market Value, Due within one year 2,018,057  
Estimated Market Value $ 2,018,057 $ 2,666,766