Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Revenue and Accounts Receivable - Schedule of Revenue by Service Type (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue $ 6,750 $ 4,001 $ 19,819 $ 12,556
Biopharma Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue 3,805 2,608 11,374 8,614
Clinical Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue 2,687 1,150 7,685 3,274
Discovery Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue 258 $ 243 760 $ 668
Response Genetics, Inc. | Biopharma Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue 522   1,600  
Response Genetics, Inc. | Clinical Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue $ 1,481   $ 4,610