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Short-term Investments and Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2022
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, 2022 and December 31, 2021:
 As of June 30, 2022
 Contractual
Maturity (in years)
CostGross Unrealized
Gains
Gross Unrealized
Losses
Fair Market Value
Mutual funds---$178,648,717 $— $(10,335,084)$168,313,633 
U.S. treasury securities
Less than 1
114,612,686 133 (247,419)114,365,400 
Commercial paper
Less than 1
19,998,833 — — 19,998,833 
Certificates of deposit
Less than 1
2,976,882 14,649 (329)2,991,202 
U.S. agency mortgage-backed securities*1,481,642 — (127,253)1,354,389 
$317,718,760 $14,782 $(10,710,085)$307,023,457 
 As of December 31, 2021
Contractual
Maturity (in years)
CostGross Unrealized
Gains
Gross Unrealized
Losses
Fair Market Value
Mutual funds---$192,966,772 $87,069 $(1,614,411)$191,439,430 
U.S. treasury securities
Less than 1
94,193,441 — (9,921)94,183,520 
Commercial paper
Less than 1
39,967,853 — — 39,967,853 
Certificates of deposit
Less than 1
2,976,210 15,618 (338)2,991,490 
U.S. agency mortgage-backed securities*1,608,137 4,508 (23,998)1,588,647 
$331,712,413 $107,195 $(1,648,668)$330,170,940 
*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, 2022:

Fair Value Measurements at
 June 30, 2022
 TotalQuoted Prices
in Active Markets
(Level 1)
Significant
Other Unobservable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Short-term investments
     Mutual funds$168,313,633 $168,313,633 $— $— 
     U.S. treasury securities114,365,400 114,365,400 — — 
     Commercial paper19,998,833 — 19,998,833 — 
     Certificates of deposit2,991,202 — 2,991,202 — 
     U.S. agency mortgage-backed securities1,354,389 — 1,354,389 — 
Total short-term investments307,023,457 282,679,033 24,344,424 — 
Investment in affiliated entity2,435,053 2,435,053 — — 
Total assets measured at fair value$309,458,510 $285,114,086 $24,344,424 $— 

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, 2021:
Fair Value Measurements at
 December 31, 2021
 TotalQuoted Prices
in Active Markets
(Level 1)
Significant
Other Unobservable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Short-term investments
     Mutual funds$191,439,430 $191,439,430 $— $— 
     U.S. treasury securities94,183,520 94,183,520 — — 
     Commercial paper39,967,853 — 39,967,853 — 
     Certificates of deposit2,991,490 — 2,991,490 — 
     U.S. agency mortgage-backed securities1,588,647 — 1,588,647 — 
Total short-term investments330,170,940 285,622,950 44,547,990 — 
Investment in affiliated entity3,906,796 3,906,796 — — 
Total assets measured at fair value$334,077,736 $289,529,746 $44,547,990 $—