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Short-term Investments and Fair Value Measurements - Narrative (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
position
shares
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
position
shares
Jun. 30, 2021
USD ($)
Debt Securities, Available-for-sale [Line Items]        
Realized gain on investments $ 1,000 $ 358,000 $ 21,000 $ 358,000
Realized loss on investments 3,000 194,000 342,000 204,000
Unrealized loss 4,000,000   8,800,000  
Net unrealized (loss) gain on available-for-sale equity securities $ (3,967,101) $ 136,493 $ (8,807,742) $ (711,465)
Number of securities in a gross unrealized loss position | position 32   32  
Number of securities in a gross unrealized loss position for more than twelve months | position 16   16  
Unrealized loss     $ 4,500,000  
Level 1 | Common stock        
Debt Securities, Available-for-sale [Line Items]        
Investment owned (in shares) | shares 597,808   597,808