Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share - Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share (Parenthetical) (Detail)

v3.5.0.2
Earnings per Share - Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share (Parenthetical) (Detail)
1 Months Ended 9 Months Ended
Nov. 30, 2013
Sep. 30, 2016
Restricted Stock Awards [Member] | Non-Employee Directors [Member]    
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]    
Vesting period 3 years 3 years