Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Financial Liabilities Measured at Fair Value on Recurring Basis (Detail)

v3.5.0.2
Fair Value Measurements - Summary of Financial Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair value measurements, recurring - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Warrant liability   $ 17
Notes payable $ 165 266
Total liabilities fair value   283
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Warrant liability   0
Notes payable 0 0
Total liabilities fair value   0
Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Warrant liability   0
Notes payable 0 0
Total liabilities fair value   0
Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Warrant liability   17
Notes payable $ 165 266
Total liabilities fair value   $ 283