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Subsequent Events - Additional information (Detail) (USD $)
0 Months Ended 3 Months Ended 0 Months Ended
Jan. 30, 2014
Mar. 31, 2014
Mar. 31, 2013
Apr. 16, 2014
Subsequent Event [Member]
Subsequent Event [Line Items]        
Dividends per share declared on outstanding common stock $ 0.10 $ 0.10 $ 0.08 $ 0.10
Dividends payable date   Mar. 03, 2014   Jul. 03, 2014
Dividends payable, shareholders record date   Feb. 19, 2014   Jun. 19, 2014