Quarterly report pursuant to sections 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v2.4.0.8
Subsequent Events - Additional Information (Detail) (Class A Common Stock [Member], USD $)
In Millions, except Share data, unless otherwise specified
6 Months Ended 0 Months Ended
Jun. 30, 2013
Jul. 02, 2013
Subsequent Event [Member]
Jul. 12, 2013
Subsequent Event [Member]
Subsequent Event [Line Items]      
Sale of common stock 4,790,684 4,790,684 718,603
Sale price of common stock     $ 11.00
Gross proceeds from sale of common stock     $ 7.9
Net proceeds from sale of common stock     $ 7.4
Common stock, shares outstanding 4,790,694   5,509,297