Subsequent Events - Additional Information (Detail) (USD $)	0 Months Ended
	Nov. 06, 2013	Aug. 07, 2013	Feb. 12, 2014 Subsequent Events
Subsequent Event [Line Items]
Cash dividend declared, Common stock	$ 0.10	$ 0.10	$ 0.10
Cash dividend declared, Common stock paid date			Mar. 14, 2014
Cash dividend declared, Common stock Record date			Feb. 25, 2014
Cash dividend declared, Common stock Declared date			Feb. 12, 2014