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Short-term Investments and Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale Securities
The following is a summary of available-for-sale securities as of December 31, 2023 and 2022:
 
 As of December 31, 2023
 Contractual
Maturity (in years)
CostGross Unrealized
Gains
Gross Unrealized
Losses
Fair Market Value
Mutual funds---$55,389,289 $— $(3,522,888)$51,866,401 
U.S. treasury securities
Less than 1
75,164,782 24,938 — 75,189,720 
Certificates of deposit
Less than 1
2,978,917 11,709 (300)2,990,326 
U.S. agency mortgage-backed securities*1,340,439 — (403,973)936,466 
$134,873,427 $36,647 $(3,927,161)$130,982,913 
 As of December 31, 2022
 Contractual
Maturity (in years)
CostGross Unrealized
Gains
Gross Unrealized
Losses
Fair Market Value
Mutual funds---$117,036,232 $— $(9,373,514)$107,662,718 
U.S. treasury securities
Less than 1
95,001,209 7,567 (44,266)94,964,510 
Certificates of deposit
Less than 1
2,977,564 13,664 (320)2,990,908 
U.S. agency mortgage-backed securities*1,435,592 — (384,331)1,051,261 
$216,450,597 $21,231 $(9,802,431)$206,669,397 

*No single maturity date.
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table presents the Company’s assets that were measured at fair value on a recurring basis, determined using the following inputs as of December 31, 2023:
 
Fair Value Measurements at
 December 31, 2023
 TotalQuoted Prices
in Active Markets
(Level 1)
Significant
Other Unobservable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Short-term investments
    Mutual funds$51,866,401 $51,866,401 $— $— 
    U.S. treasury securities75,189,720 75,189,720 — — 
    Certificates of deposit2,990,326 — 2,990,326 — 
    U.S. agency mortgage-backed securities936,466 — 936,466 — 
Total short-term investments130,982,913 127,056,121 3,926,792 — 
Investment in affiliated entity2,780,287 2,780,287 — — 
Total assets measured at fair value$133,763,200 $129,836,408 $3,926,792 $— 

The following table presents the Company’s assets that were measured at fair value on a recurring basis, determined using the following inputs as of December 31, 2022:
 
Fair Value Measurements at
 December 31, 2022
 TotalQuoted Prices
in Active Markets
(Level 1)
Significant
Other Unobservable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Short-term investments
     Mutual funds$107,662,718 $107,662,718 $— $— 
     U.S. treasury securities94,964,510 94,964,510 — — 
     Certificates of deposit2,990,908 — 2,990,908 — 
     U.S. agency mortgage-backed securities1,051,261 — 1,051,261 — 
Total short-term investments206,669,397 202,627,228 4,042,169 — 
Investments in affiliated entity2,007,142 2,007,142 — — 
Total assets measured at fair value$208,676,539 $204,634,370 $4,042,169 $—