Description of Business - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2014 Segment	Dec. 31, 2013	Dec. 06, 2013	Dec. 05, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Common stock, shares authorized	750,000,000	750,000,000	750,000,000	225,000,000
Preferred stock, shares authorized	25,000,000	25,000,000	225,000,000
Preferred stock, per share	$ 0.01	$ 0.01	$ 0.01
Number of business segments	1