Annual report pursuant to Section 13 and 15(d)

Borrowing Arrangements - Schedule of Required Future Principal Payments - (Detail)

v3.8.0.1
Borrowing Arrangements - Schedule of Required Future Principal Payments - (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Total $ 3,500 $ 5,600
Growth Capital Loan    
Debt Instrument [Line Items]    
2018 2,400  
2019 1,145  
Total 3,545 $ 5,600
Debt discount and deferred finance costs (67)  
Total $ 3,478