Stockholder's Equity - Stock Option Activity (Details)	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	1,020,978
Options exercised (in shares) | shares	(70,244)
Options cancelled (in shares) | shares	(150)
Ending balance (in shares) | shares	950,584
Weighted-Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 23.38
Options exercised (in dollars per share) | $ / shares	13.92
Options cancelled (in dollars per share) | $ / shares	19.07
Ending balance (in dollars per share) | $ / shares	$ 24.08