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Dividends - Additional Information (Detail) - Subsequent Event [Member]
Nov. 08, 2016
$ / shares
Dividends Payable [Line Items]  
Quarterly dividend payment per share $ 0.22
Cash dividend anticipated payable date 2017-04
First Installment [Member]  
Dividends Payable [Line Items]  
Dividends payable date declared Nov. 08, 2016
Quarterly dividend payment per share $ 0.195
Record Date Dec. 30, 2016
Cash dividend payable date Jan. 13, 2017