Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.6.0.2
Summary of Significant Accounting Policies - Additional Information (Detail)
12 Months Ended
Dec. 31, 2016
USD ($)
Client
$ / shares
Dec. 31, 2015
USD ($)
Client
Dec. 31, 2014
USD ($)
Schedule Of Significant Accounting Policies [Line Items]      
Outsourced shipping expenses $ 10,300,000 $ 3,600,000 $ 3,000,000
Number of clients accounted for more than 5% revenue | Client 0 0  
Minimum cost of purchases under Property and equipment $ 1,000    
Property and equipment, life 1 year    
Impairment loss $ 3,500,000 $ 0 0
Minimum threshold percentage of voting securities on acquisition for deemed liquidation event 50.00%    
Maximum voting power percentage after consolidation merger or reorganization for deemed liquidation event 50.00%    
Preferred stock conversion trading price | $ / shares $ 8.00    
Convertible preferred stock, terms of conversion conversion (Written Call Option) on the underlying shares if after three years the stock trades at $8.00 for thirty trading days, and (v) conversion (Contingent Forward) on the underlying shares automatically at the ten year anniversary of the issue date.    
Accretion expense recognized period 3 years    
Largest amount of tax benefit Greater than 50%    
Provision for interest or penalties related to uncertain tax positions $ 0 $ 0 $ 0
Dividend yield (%) 0.00% 0.00% 0.00%
Current deferred tax assets $ 1,248,900 $ 16,668,000  
Deferred tax asset $ 6,500,000    
Net Revenues [Member] | Customer Concentration Risk [Member]      
Schedule Of Significant Accounting Policies [Line Items]      
Percentage of revenue derived from 5.00% 5.00%  
Net Revenues [Member] | Customer Concentration Risk [Member] | Oncology Practice Clients [Member]      
Schedule Of Significant Accounting Policies [Line Items]      
Percentage of revenue derived from     10.10%
Net Revenues [Member] | Customer Concentration Risk [Member] | Other Individual Clients [Member]      
Schedule Of Significant Accounting Policies [Line Items]      
Percentage of revenue derived from     10.00%
Net Revenues [Member] | California [Member] | Customer Concentration Risk [Member] | Clarient, Inc. [Member]      
Schedule Of Significant Accounting Policies [Line Items]      
Percentage of revenue derived from 24.00% 20.20% 15.00%
Net Revenues [Member] | Florida [Member] | Customer Concentration Risk [Member] | Clarient, Inc. [Member]      
Schedule Of Significant Accounting Policies [Line Items]      
Percentage of revenue derived from 15.00% 20.50% 25.80%