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Subsequent Events - Additional Information (Detail) - Subsequent Event - Dividend Declared
Sep. 05, 2017
$ / shares
Subsequent Event [Line Items]  
Dividends payable, declared date Sep. 05, 2017
Dividends payable, per share amount $ 0.10
Dividends payable, payable date Oct. 13, 2017
Dividends declared, record date Sep. 27, 2017