Quarterly report pursuant to Section 13 or 15(d)

Notes Payable to Former Stockholders - Schedule of Interest Expense Pertaining to Notes (Detail)

v3.4.0.3
Notes Payable to Former Stockholders - Schedule of Interest Expense Pertaining to Notes (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Interest Expense [Line Items]    
Interest expense $ 391 $ 583
Notes Payable to Former Stockholders [Member]    
Interest Expense [Line Items]    
Interest expense $ 133 $ 144