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Notes Payable and Revolving Line of Credit - Acquisition Related Debt - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Feb. 29, 2016
Aug. 31, 2015
Feb. 27, 2015
Aug. 15, 2014
Apr. 30, 2013
Dec. 31, 2015
Dec. 31, 2013
Dec. 31, 2014
Aug. 31, 2012
Apr. 30, 2012
Mar. 31, 2012
Line Of Credit Facility [Line Items]                      
Amount of subordinated note payable                   $ 1,000 $ 1,000
Debt instrument maturity date           Aug. 31, 2019          
Repayments of Subordinated Debt     $ 1,000     $ 945          
TSN Acquisition | Notes payable                      
Line Of Credit Facility [Line Items]                      
Monthly principal payments   $ 300                  
Debt instrument maturity date           Feb. 29, 2016          
Interest rate   6.25%                  
TSN Acquisition | Notes payable | Subsequent Event                      
Line Of Credit Facility [Line Items]                      
Monthly principal payments $ 1,200                    
Accrued interest $ 200                    
Acquisition-Related Debt | TSN Acquisition                      
Line Of Credit Facility [Line Items]                      
Business acquisition, effective date of acquisition           Aug. 31, 2012          
Term loan balloon payment       $ 1,500     $ 3,000        
Contingent Payment Discount Percentage           13.00%          
Claw back of contingent payment             $ 500        
Reduction of shares of common stock             118,576        
Acquisition-Related Debt | TSN Acquisition | Notes payable                      
Line Of Credit Facility [Line Items]                      
Amount of subordinated note payable                 $ 6,200    
Monthly principal payments           $ 2,200          
Description of payment of principal installments           Equal monthly principal installments over 36 months          
Interest rate           5.00%          
Term loan balloon payment   $ 2,500     $ 500            
Debt instrument maturity date           Aug. 31, 2015          
Interest rate on balloon payment           3.125%          
Contingent balloon payment due   $ 1,500                  
Contingent balloon payment due date           Aug. 31, 2015          
Interest rate on contingent balloon payment           3.125%          
Number of shares of common stock converted         95,451            
Conversion price per share         $ 5.24            
Repayments of Subordinated Debt       200              
Acquisition-Related Debt | TSN Acquisition | Notes payable | Settlement Agreement                      
Line Of Credit Facility [Line Items]                      
Amount of subordinated note payable           $ 1,200   $ 1,800      
Repayments of Subordinated Debt       $ 7,600