Quarterly report pursuant to Section 13 or 15(d)

Revenue and Accounts Receivable - Schedule of Accounts Receivable by Service Type (Detail)

v3.5.0.2
Revenue and Accounts Receivable - Schedule of Accounts Receivable by Service Type (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Allowance for doubtful accounts $ (672) $ (664)
Accounts receivable, net 13,679 6,621
Biopharma Services    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Gross, Current 5,369 3,238
Clinical Services    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Gross, Current 8,607 3,733
Discovery Services    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Gross, Current $ 375 $ 314