Stock Based Compensation - Share Based Compensation Activity (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2020 $ / shares shares
Options Outstanding
Beginning balance (in shares) | shares	410
Granted (in shares) | shares	587
Exercised (in shares) | shares	(2)
Canceled/forfeited (in shares) | shares	(44)
Ending balance (in shares) | shares	951
Weighted Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 14.50
Granted (in dollars per share) | $ / shares	12.64
Exercised (in dollars per share) | $ / shares	11.66
Canceled/forfeited (in dollars per share) | $ / shares	0.00
Ending balance (in dollars per share) | $ / shares	$ 13.40
Restricted Stock Awards
Restricted Stock and RSU Awards Outstanding
Beginning balance (in shares) | shares	171
Granted (in shares) | shares	21
Vested (in shares) | shares	(122)
Forfeited and cancelled (in shares) | shares	(38)
Beginning balance (in shares) | shares	32
Weighted Average Award Value
Beginning balance (in dollars per share) | $ / shares	$ 23.53
Granted (in dollars per share) | $ / shares	29.19
Vested (in dollars per share) | $ / shares	25.82
Forfeited and canceled (in dollars per share) | $ / shares	14.97
Ending balance (in dollars per share) | $ / shares	$ 28.73
RSU Awards
Restricted Stock and RSU Awards Outstanding
Beginning balance (in shares) | shares	0
Granted (in shares) | shares	360
Vested (in shares) | shares	0
Forfeited and cancelled (in shares) | shares	0
Beginning balance (in shares) | shares	360
Weighted Average Award Value
Beginning balance (in dollars per share) | $ / shares	$ 0.00
Granted (in dollars per share) | $ / shares	12.64
Vested (in dollars per share) | $ / shares	0.00
Forfeited and canceled (in dollars per share) | $ / shares	0.00
Ending balance (in dollars per share) | $ / shares	$ 12.64