Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Class A Redeemable Convertible Preferred Stock - Additional Information (Detail)

v3.5.0.2
Class A Redeemable Convertible Preferred Stock - Additional Information (Detail) - Series A Redeemable Convertible Preferred Stock [Member] - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2016
Dec. 31, 2015
Dec. 30, 2015
Temporary Equity [Line Items]        
Temporary equity, shares issued 14,666,667 14,666,667 14,666,667 14,666,667
Temporary equity, face value $ 0.001 $ 0.001 $ 0.001 $ 7.50
Temporary equity, liquidation value       $ 110.0
Temporary equity, liquidation description   During the first year, the Series A Preferred Stock has a liquidation value of $100 million if the shares are redeemed prior to December 29, 2016.    
Temporary equity, liquidation at redemption $ 100.0 $ 100.0    
Temporary equity, carrying amount 39.7 39.7 $ 28.6  
Accrual of deemed dividends   3.7    
Accretion of beneficial conversion feature   7.5    
Temporary equity, fair value       $ 73.2
Temporary equity issued, price per share       $ 4.99
Temporary equity issue discount       $ 36.8
Temporary equity value of beneficial conversion feature 44.7 44.7    
Temporary equity recognized amount of beneficial conversion feature $ 3.7 $ 7.5