XML 94 R83.htm IDEA: XBRL DOCUMENT v3.21.2
Incentive Plans - Summary of Activity Related to Shares of Restricted Common Stock (Detail) - Restricted Stock [Member]
9 Months Ended
Sep. 30, 2021
$ / shares
shares
Share-based compensation arrangement by share-based payment award [Line Items]  
Units, Beginning Balance | shares 1,144,959
Units, Granted | shares 445,263
Units, Forfeited | shares (103,850)
Units, Settled | shares (587,994)
Units, Ending Balance | shares 898,378
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares $ 41.09
Weighted Average Grant Date Fair Value, Granted | $ / shares 43.30
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 40.81
Weighted Average Grant Date Fair Value, Settled | $ / shares 42.95
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares $ 41.00