Short-term Investments

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Short-term Investments

4. Short-term Investments 

	Year ended December 31
	2023		2022
Short-term investments
U.S. Treasury Bills	$	7,985,600	$	4,385,200
Short-term investments	$	7,985,600	$	4,385,200

	Amortized Cost		Fair Value
U.S. Treasury Bills
Due January 25, 2024	$	1,074,700	$	1,121,200
Due April 18, 2024		1,087,900		1,107,600
Due July 11, 2024		1,074,800		1,096,700
Due September 5, 2024		4,748,200		4,837,600
Total	$	7,985,600	$	8,163,100

Total interest income recognized for U.S. Treasury Bills was $239,600 and $35,200 for years ended December 31, 2023 and December 31, 2022. Interest receivable was $160,000 and $35,200 for the years ended December 31, 2023 and December 31, 2022.