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Notes Payable - Narrative (Details) (USD $)
 0 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Jun. 20, 2011
Dec. 31, 2012
Term Note Payable
Oct. 11, 2011
Line of Credit
Bridge Bank, N.A.
Feb. 15, 2011
Line of Credit
Bridge Bank, N.A.
Revolving Credit Facility
Feb. 29, 2012
Line of Credit
Bridge Bank, N.A.
Revolving Credit Facility
Feb. 14, 2011
Line of Credit
Wachovia Bank, N.A.
Revolving Credit Facility
Dec. 31, 2012
Bridge Bank – Term Note Payable - March 1, 2012
Term Note Payable
Dec. 31, 2012
Bridge Bank – Term Note Payable - March 1, 2012
Term Note Payable
Bridge Bank, N.A.
Jun. 30, 2012
Bridge Bank – Term Note Payable - March 1, 2012
Term Note Payable
Bridge Bank, N.A.
installment
Mar. 01, 2012
Bridge Bank – Term Note Payable - March 1, 2012
Term Note Payable
Bridge Bank, N.A.
Mar. 01, 2012
Bridge Bank – Revolving Credit Line - March 1, 2012
Bridge Bank, N.A.
May 31, 2012
Bridge Bank – Revolving Credit Line - March 1, 2012
Bridge Bank, N.A.
Dec. 31, 2012
Bridge Bank – Revolving Credit Line - March 1, 2012
Bridge Bank, N.A.
Sep. 30, 2012
Bridge Bank – Revolving Credit Line - March 1, 2012
Bridge Bank, N.A.
Feb. 15, 2011
Bridge Bank – Revolving Credit Line - March 1, 2012
Bridge Bank, N.A.
Dec. 31, 2012
Bridge Bank – Revolving Credit Line - March 1, 2012
Line of Credit
Revolving Credit Facility
Mar. 01, 2012
Bridge Bank – Revolving Credit Line - March 1, 2012
Line of Credit
Bridge Bank, N.A.
Revolving Credit Facility
Dec. 31, 2012
Bridge Bank – Revolving Credit Line - March 1, 2012
Line of Credit
Bridge Bank, N.A.
Revolving Credit Facility
Dec. 31, 2011
Bridge Bank – Term Note Payable - February 15, 2011
Bridge Bank, N.A.
Dec. 31, 2011
Bridge Bank – Term Note Payable - February 15, 2011
Term Note Payable
Sep. 30, 2012
First Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Aug. 31, 2012
First Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Jul. 31, 2012
First Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Jun. 30, 2012
First Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Dec. 31, 2012
First Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Nov. 30, 2012
First Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Oct. 31, 2012
First Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Oct. 31, 2012
Second Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Sep. 30, 2012
Second Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Dec. 31, 2012
Second Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Jan. 31, 2013
Second Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Nov. 30, 2012
Second Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Oct. 11, 2012
Second Business Financing Modification Agreement with Bridge Bank
Bridge Bank, N.A.
Debt Instrument [Line Items]                                                                      
Line of credit facility, maximum borrowing capacity           $ 8,000,000 $ 8,000,000 $ 5,000,000                     $ 10,000,000                                
Debt instrument, allowable borrowings, percentage of eligible accounts receivable           80.00%                         80.00%                                
Debt instrument, period for eligible accounts receivable, used in borrowing capacity           90 days                         90 days                                
Additional long term debt                                         475,000                            
Debt instrument, covenant, additional borrowing of purchase money, maximum           500,000                     500,000                                    
Debt instrument, covenant, operating profit, minimum           100,000             200,000                   1,500,000 1,000,000 500,000 200,000       1,000,000 600,000        
Debt instrument, ratio trailing month basis, duration           3 months               3 months                         3 months         3 months      
Line of credit facility, commitment fee percentage           0.25%                                                          
Line of credit facility, due diligence fee           (800)                                                          
Line of credit facility, fee in lieu of warrant           (21,250)                                                          
Line of credit facility, non formula facility fee           (4,750)                                                          
Line of credit facility, current borrowing fee percentage           0.125%                 0.125%                                        
Debt instrument, face amount                       5,000,000                                              
Debt instrument, additional borrowing maximum, over eligible accounts receivable limit                                     1,000,000                                
Debt instrument, number of monthly installments                     45                                                
Debt instrument, debt service coverage ratio, minimum                           1.50                             1.50     1.25 1.50 1.1  
Debt instrument, operating profit minimum, trailing month basis, duration                         3 months                                            
Debt instrument, asset coverage ratio, minimum                             1.25 1.10             0.80 0.75 0.75 0.75 1.15 1.00 0.85 0.9 0.9 1.0 1.15 1.0  
Debt instrument, description of variable rate basis                 prime prime               prime   prime   prime                          
Debt instrument, basis spread on variable rate           2.00%     1.00% 1.00%               0.50%   0.50%   2.00%                          
Bank fees, payable                                     100,000                                
Class of warrant or right, number of securities called by warrants or rights (in shares)                                                                     51,724
Class of warrant or right, exercise price of warrants or rights (usd per unit)     2.20   0.87                                                           0.87
Warrants and rights outstanding                                                                     45,000
Long-term debt 7,822,222 2,906,303   4,222,222         4,222,222                 3,600,000       475,000                          
Remaining borrowing capacity                       $ 0             $ 1,500,000