The Company and Significant Accounting Policies - Reconciliation of Basic and Diluted Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income (loss) attributable to common stockholders	$ 7,864	$ 5,429	$ 2,338	$ (35,592)	$ 13,293	$ (33,254)
Denominator:
Weighted average common shares outstanding, basic	85,188,182		84,123,530		85,115,310	84,220,649
Basic earnings per share:
Net income (loss) per share attributable to common stockholders	$ 0.09		$ 0.03		$ 0.16	$ (0.39)
Numerator:
Net income (loss) attributable to common stockholders	$ 7,864	$ 5,429	$ 2,338	$ (35,592)	$ 13,293	$ (33,254)
Denominator:
Weighted average common shares outstanding, basic	85,188,182		84,123,530		85,115,310	84,220,649
Dilutive securities:
Stock options and restricted stock units	2,588,857		545,720		2,266,905
Weighted average common shares outstanding, diluted	87,777,039		84,669,250		87,382,215	84,220,649
Diluted earnings per share:
Net income (loss) per share attributable to common stockholders	$ 0.09		$ 0.03		$ 0.15	$ (0.39)