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 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue $ 7,001 $ 4,185 $ 13,069 $ 8,555
Biopharma Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue 4,219 2,675 7,569 6,006
Clinical Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue 2,542 1,251 4,998 2,124
Discovery Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue 240 $ 259 502 $ 425
Response Genetics, Inc. | Biopharma Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue 619   1,078  
Response Genetics, Inc. | Clinical Services        
Health Care Organization, Receivable and Revenue Disclosures [Line Items]        
Revenue $ 1,425   $ 3,129