Organization and Capitalization - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2016 Segment shares	Dec. 31, 2015 shares	Dec. 06, 2013 $ / shares shares
Organization and Capitalization [Line Items]
Common stock, shares authorized	750,000,000	750,000,000
Preferred stock, shares authorized			25,000,000
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.01
Number of business segments | Segment	1
Minimum [Member]
Organization and Capitalization [Line Items]
Common stock, shares authorized			225,000,000
Maximum [Member]
Organization and Capitalization [Line Items]
Common stock, shares authorized			750,000,000