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Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] - Restricted Stock [Member]
$ in Millions
Apr. 15, 2016
USD ($)
shares
Subsequent Event [Line Items]  
Shares issued | shares 847,928
Vest 50% when Company reaches a total enterprise value of $2.65 billion [Member]  
Subsequent Event [Line Items]  
Market-based vesting percentage, restricted shares 100.00%
Total enterprise value | $ $ 2,650
Restricted common stock, expiration period 6 years
Minimum [Member]  
Subsequent Event [Line Items]  
Time-based restricted stock, vesting period 3 years
Maximum [Member]  
Subsequent Event [Line Items]  
Time-based restricted stock, vesting period 5 years