Annual report pursuant to Section 13 and 15(d)

Description of Business, Basis of Presentation and Recent Accounting Pronouncements - Additional Information 1 (Detail)

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Description of Business, Basis of Presentation and Recent Accounting Pronouncements - Additional Information 1 (Detail) (USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2013
Nov. 05, 2013
IPO [Member]
Class of Stock [Line Items]    
Common stock sold   6,900,000
Common stock sold and issued under IPO, price per share   $ 12.00
Description of IPO   On November 5, 2013, the Company completed its IPO of 6,900,000 shares of common stock at a price to the public of $12.00 per share.
Effective date of IPO Oct. 31, 2013