Stock Based Compensation - Share Based Compensation Activity (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Options Outstanding
Beginning balance (in shares) | shares	957
Exercised (in shares) | shares	(34)
Canceled/forfeited (in shares) | shares	(29)
Ending balance (in shares) | shares	894
Weighted Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 14.29
Exercised (in dollars per share) | $ / shares	12.29
Canceled/forfeited (in dollars per share) | $ / shares	18.78
Ending balance (in dollars per share) | $ / shares	$ 14.22
Restricted Stock Awards
Restricted Stock and RSU Awards Outstanding
Beginning balance (in shares) | shares	61
Granted (in shares) | shares	2
Vested (in shares) | shares	(33)
Forfeited and cancelled (in shares) | shares	(1)
Beginning balance (in shares) | shares	29
Weighted Average Award Value
Beginning balance (in dollars per share) | $ / shares	$ 25.62
Granted (in dollars per share) | $ / shares	22.36
Vested (in dollars per share) | $ / shares	24.91
Forfeited and canceled (in dollars per share) | $ / shares	20.94
Ending balance (in dollars per share) | $ / shares	$ 26.25
RSU Awards
Restricted Stock and RSU Awards Outstanding
Beginning balance (in shares) | shares	427
Granted (in shares) | shares	73
Vested (in shares) | shares	(86)
Beginning balance (in shares) | shares	414
Weighted Average Award Value
Beginning balance (in dollars per share) | $ / shares	$ 15.46
Granted (in dollars per share) | $ / shares	76.13
Vested (in dollars per share) | $ / shares	16.40
Ending balance (in dollars per share) | $ / shares	$ 26.22