Equity Incentive Awards - Summary of Stock Options Activity (Detail) shares in Thousands	3 Months Ended
	Mar. 31, 2020 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Options Outstanding [Roll Forward]
Beginning balance (in shares) | shares	8,995
Options granted (in shares) | shares	1,594
Options exercised (in shares) | shares	(1,310)
Options forfeited (in shares) | shares	(207)
Ending balance (in shares) | shares	9,072
Exercisable (in shares) | shares	2,785
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance (in USD per share) | $ / shares	$ 7.19
Options granted (in USD per share) | $ / shares	15.15
Options exercised (in USD per share) | $ / shares	7.37
Options forfeited (in USD per share) | $ / shares	14.05
Ending balance (in USD per share) | $ / shares	8.41
Exercisable (in USD per share) | $ / shares	$ 6.89