Investments in Non-Marketable Securities - Textual (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Marketable Securities [Line Items]
Interest income from amortization of discount	$ 200,000	$ 0	$ 300,000	$ 0
Change in fair value of embedded bifurcated derivative recognized in other income	57,500
Change in fair value of embedded bifurcated derivative recognized in other expense			10,500
Other expenses		0		0
Unrealized or realized gains or losses	0	0	0	0
Non-marketable equity securities
Marketable Securities [Line Items]
Unrealized or realized gains or losses	$ 0	$ 0	$ 0	$ 0