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Stock-Based Compensation and Employee Benefit Plans - Summary of the Activity under the VI Chip Stock Option Plans (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Options Outstanding, Exercised (2,430)
VI Chip [Member]
  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Options Outstanding, Beginning balance 10,525,000
Options Outstanding, Granted 560,000
Options Outstanding, Forfeited and expired (340,750)
Options Outstanding, Exercised   
Options Outstanding, Ending balance 10,744,250
Options Outstanding, Exercisable 7,267,600
Options Outstanding, Vested or expected to vest 10,273,500
Weighted Average Exercise Price, Beginning balance $ 1.00
Weighted Average Exercise Price, Granted $ 1.00
Weighted Average Exercise Price, Forfeited and expired $ 1.00
Weighted Average Exercise Price, Exercised   
Weighted Average Exercise Price, Ending balance $ 1.00
Weighted Average Exercise Price, Exercisable $ 1.00
Weighted Average Exercise Price, Vested or expected to vest $ 1.00
Weighted-Average Remaining Contractual Life in Years, Outstanding 4 years 9 months 11 days
Weighted-Average Remaining Contractual Life in Years, Exercisable 3 years 6 months 7 days
Weighted-Average Remaining Contractual Life in Years, Vested or expected to vest 4 years 7 months 28 days
Aggregate Intrinsic Value, Outstanding   
Aggregate Intrinsic Value, Exercisable   
Aggregate Intrinsic Value, Vested or expected to vest