Stockholders' Equity - Summary of Warrant Activity (Details)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Common Shares Issuable upon Exercise
Outstanding, beginning balance (in shares) | shares	10,066,000
Issued (in shares) | shares	0
Exercised (in shares) | shares	(6,146,000)
Cancelled (in shares) | shares	0
Outstanding, ending balance (in shares) | shares	3,920,000
Exercisable at balance sheet date (in shares) | shares	3,920,000
Weighted Average Exercise Price
Outstanding, beginning balance (in usd per share) | $ / shares	$ 1.84
Issued (in usd per share) | $ / shares	0
Exercised (in usd per share) | $ / shares	0.95
Cancelled (in usd per share) | $ / shares	0
Outstanding, ending balance (in usd per share) | $ / shares	3.24
Exercisable at balance sheet date (in dollars per share) | $ / shares	$ 3.24
Warrant Average Remaing Contractual Life
Warrants, outstanding, beginning	4 years 144 days
Warrants, outstanding, ending	3 years 252 days
Warrants exercisable	3 years 252 days