Annual report pursuant to Section 13 and 15(d)

Acquisition of Response Genetics - Fair Value of Assets Acquired and Liabilities Assumed (Details)

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Acquisition of Response Genetics - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($)
3 Months Ended 12 Months Ended
Oct. 09, 2015
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Business Acquisition [Line Items]          
Goodwill   $ 12,029,000 $ 12,029,000 $ 12,029,000 $ 3,187,000
Consideration transferred, cash     $ 0 $ 7,495,000  
Response Genetics          
Business Acquisition [Line Items]          
Business combination, pro forma information, revenue of acquiree since acquisition date, actual   $ 1,751,000      
Accounts receivable $ 344,000        
Prepaid expenses and other current assets 561,000        
Fixed assets 2,254,000        
Intangible assets 1,246,000        
Goodwill 8,842,000        
Current liabilities (194,000)        
Obligations under capital lease (122,000)        
Total purchase price 12,931,000        
Consideration transferred, cash 7,500,000        
Total purchase price $ 12,900,000        
Consideration transferred, stock (shares) 788,584        
Consideration transferred, stock $ 5,400,000        
Acquisition related costs $ 890,000