Organization, Acquisitions, Description of Business, Reverse Stock Split and Charter Amendment - Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Oct. 09, 2015
Dec. 31, 2014
Aug. 18, 2014
Jul. 16, 2014
Dec. 31, 2013
Business Acquisition [Line Items]            
Goodwill $ 12,029   $ 3,187     $ 0
Gentris Corporation            
Business Acquisition [Line Items]            
Accounts receivable         $ 1,869  
Other current assets         266  
Current liabilities         (785)  
Deferred revenue, long-term         (938)  
Fixed assets         1,951  
Goodwill         2,452  
Total purchase price         $ 4,815  
BioServe            
Business Acquisition [Line Items]            
Accounts receivable       $ 151    
Other current assets       102    
Current liabilities       (759)    
Other assets       378    
Fixed assets       489    
Goodwill       735    
Other liabilities       (22)    
Total purchase price       $ 1,074    
Response Genetics            
Business Acquisition [Line Items]            
Accounts receivable   $ 344        
Prepaid expenses and other current assets   561        
Current liabilities   (194)        
Fixed assets   2,254        
Intangible assets   1,246        
Goodwill   8,842        
Obligations under capital lease   (122)        
Total purchase price   $ 12,931