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Debt (Details Textual) (USD $)
 1 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 6 Months Ended 6 Months Ended
Jun. 30, 2012
Securities pledged as collateral [Member]
Mar. 31, 2010
Oxford Growth Capital Facility [Member]
Dec. 31, 2011
Oxford Growth Capital Facility [Member]
Jun. 30, 2012
Comerica - Growth Capital Facility [Member]
Sep. 30, 2011
Comerica - Growth Capital Facility [Member]
Growth Capital Loan [Member]
Jun. 30, 2012
Comerica - Growth Capital Facility [Member]
Growth Capital Loan [Member]
Sep. 30, 2011
Comerica - Growth Capital Facility [Member]
Revolving Credit Facility [Member]
Jun. 30, 2012
Comerica - Growth Capital Facility [Member]
Revolving Credit Facility [Member]
Dec. 31, 2011
Comerica - Growth Capital Facility [Member]
Revolving Credit Facility [Member]
Jun. 30, 2012
Compliance with Covenants [Member]
Debt (Textual) [Abstract]                    
Amended Credit Agreement       $ 12,000,000   $ 5,000,000   $ 7,000,000    
Percentage of investments made in subsidiary 35.00%                  
Principal and interest payments   Interest only- payments due for the first nine months and then equal principal and interest payments for an additional 30 months     Growth Capital Loan, which matures on September 30, 2015, bears a fixed interest rate of 6.37%, with interest-only payments due for the first twelve months, followed by equal principal and interest payments for the remaining 36 months     Interest only - payments due each month. The Company is required to repay the principal drawn from the RLOC at the end of the RLOC term on June 30, 2014    
Stated interest rate   12.04%     6.37%          
Commitment fee         40,000   20,000 20,000    
Line of Credit Facility, Frequency of Commitment Fee Payment               Annually    
Loan fees         50,000          
Effective interest rate         7.07%          
Final Payment Fee Percentage         1.00%          
Amount under RLOC available to the Company               80.00%    
Withdrawal amount under the facility         5,000,000     200,000 2,300,000  
Margin rate               1.50%    
Lender's prime rate plus 1.50%               Lender’s prime rate plus 1.50%    
Floating rate of interest               4.75% 4.75%  
Maturity period         Sep. 30, 2015     Jun. 30, 2014    
Outstanding amounts               2,500,000 2,300,000  
Minimum cash balance                   2,500,000
Minimum Revenues Levels Percentage                   75.00%
Issuance of senior secured notes   5,000,000                
Closing cost and fees     $ 200,000