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Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques (Detail)

v3.2.0.727
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value $ 7,293 $ 12,355
Discount rate 15.50%  
Volatility 115.00%  
Risk-free interest rate 0.98%  
Dividend yield 0.00%  
Expected payments terms    
Income Approach Valuation Technique    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Valuation Technique Income approach  
Monte Carlo Simulation Valuation Model    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Valuation Technique Monte Carlo simulation  
Expected Payments    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Valuation Technique Expected payments  
Fair Value, Inputs, Level 3    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value $ 7,293  
Fair Value, Inputs, Level 3 | Earn Out Liability    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value 5,213  
Fair Value, Inputs, Level 3 | Stock Distribution    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value 1,580  
Fair Value, Inputs, Level 3 | Time Based    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value $ 500