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Short-term Investments and Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Summary of Investments
The following is a summary of available-for-sale securities as of March 31, 2023 and December 31, 2022:
 As of March 31, 2023
 Contractual
Maturity (in years)
CostGross Unrealized
Gains
Gross Unrealized
Losses
Fair Market Value
Mutual funds---$85,986,541 $— $(6,155,299)$79,831,242 
U.S. treasury securities
Less than 1
111,591,593 57,827 — 111,649,420 
Certificates of deposit
Less than 1
2,977,897 13,182 (314)2,990,765 
U.S. agency mortgage-backed securities*1,402,093 — (360,515)1,041,578 
$201,958,124 $71,009 $(6,516,128)$195,513,005 
 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 March 31, 2023:

Fair Value Measurements at
 March 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$79,831,242 $79,831,242 $— $— 
     U.S. treasury securities111,649,420 111,649,420 — — 
     Certificates of deposit2,990,765 — 2,990,765 — 
     U.S. agency mortgage-backed securities1,041,578 — 1,041,578 — 
Total short-term investments195,513,005 191,480,662 4,032,343 — 
Investment in affiliated entity2,623,781 2,623,781 — — 
Total assets measured at fair value$198,136,786 $194,104,443 $4,032,343 $— 

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 $—