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Short-term Investments and Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Summary of Investments
The following is a summary of available-for-sale securities as of June 30, 2023 and December 31, 2022:
 As of June 30, 2023
 Contractual
Maturity (in years)
CostGross Unrealized
Gains
Gross Unrealized
Losses
Fair Market Value
Mutual funds---$65,340,680 $— $(5,232,358)$60,108,322 
U.S. treasury securities
Less than 1
78,144,669 321 — 78,144,990 
Certificates of deposit
Less than 1
2,978,235 12,695 (310)2,990,620 
U.S. agency mortgage-backed securities*1,379,591 — (410,616)968,975 
$147,843,175 $13,016 $(5,643,284)$142,212,907 
 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 Fair Value, Assets and Liabilities Measured on 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 June 30, 2023:

Fair Value Measurements at
 June 30, 2023
 TotalQuoted Prices
in Active Markets
(Level 1)
Significant
Other Unobservable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Short-term investments
     Mutual funds$60,108,322 $60,108,322 $— $— 
     U.S. treasury securities78,144,990 78,144,990 — — 
     Certificates of deposit2,990,620 — 2,990,620 — 
     U.S. agency mortgage-backed securities968,975 — 968,975 — 
Total short-term investments142,212,907 138,253,312 3,959,595 — 
Investment in affiliated entity2,780,526 2,780,526 — — 
Total assets measured at fair value$144,993,433 $141,033,838 $3,959,595 $— 

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 — 
Investment in affiliated entity2,007,142 2,007,142 — — 
Total assets measured at fair value$208,676,539 $204,634,370 $4,042,169 $—