Quarterly report pursuant to Section 13 or 15(d)

Equity Based Awards - Summary of Additional Information Regarding Exercise of Stock Options (Detail)

v3.21.2
Equity Based Awards - Summary of Additional Information Regarding Exercise of Stock Options (Detail) - 2013 Stock Plan [Member] - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Line Items]    
Weighted-average grant date fair value of options granted $ 0 $ 1.02
Intrinsic value of options exercised $ 16,496 $ 3,158