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Convertible note and warrants (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2012
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Debt Instrument, Convertible, Stated Interest Rate       8.00%  
Debt Instrument, Convertible, Effective Interest Rate   2.69%      
Debt Conversion, Converted Instrument, Shares Issued       1,166,667  
Debt Instrument, Convertible, Conversion Price   $ 3   $ 3  
Debt Conversion, Converted Instrument, Warrants or Options Issued       875,000  
Proceeds from issuance of convertible notes payable       $ 3,500  
Debt Instrument, Convertible, Terms of Conversion Feature       The Note is convertible at the option of the holder at a conversion price of $3.00 per share and the Company can require conversion into Company Common Stock if the Weighted Average Price of the Common Stock equals or exceeds 200% of the conversion price for no less than twenty (20) Trading Days during any thirty (30) consecutive Trading Day period occurring following the issuance date, subject to a 9.99% beneficial ownership ceiling for Investor's ownership of Company Common Stock at any one time.  
Debt Instrument Convertible Terms Of Conversion Feature Warrants       The HB Warrant is exercisable at the option of the holder at a $3.00 per share exercise price and the Company can require exercise if the Weighted Average Price of the Company''''s Common Stock equals or exceeds 250% of the exercise price for no less than twenty (20) Trading Days during any thirty (30) consecutive Trading Day period occurring following the issuance date, as such terms are defined in the HB Warrant.  
Percentage Of Conversion Amount To Be Redeemed       125.00%  
Maximum Common Stock Issuable In Satisfaction Of Interest Due       140,000  
Maximum Common Stock Issuable Pursuant To Note and Warrant       2,041,667  
Issuable Of Common Stock For Investment Banking Services       75,000  
Financing and Issuance Costs       688  
Issuance Of Restricted Common Stock       75,000  
Restricted Common Stock Fair Market Value   315   315  
Deferred Financing Costs   588   588  
Warrant Issuance Costs       100  
Fair Value Assumptions, Expected Volatility Rate 75.00%     75.00%  
Fair Value Assumptions, Risk Free Interest Rate 8.00%     0.31%  
Fair Value Assumptions, Expected Dividend Rate       0.00%  
Maximum Trading Shares Per Day       30,000  
Maximum Issuable Shares Under Note and Warrants       2,000,000  
Maximum Percentage Of Stock Options Discounted       30.00%  
Warrants Issued Fair Value       500  
Convertible Note Redeemable Period       7 months  
Warrant Term       5 years  
Percentage Of Beneficial Ownership For Investor       9.99%  
Percentage Of Weighted Average Price Of Company Common Stock       200.00%  
Warrants Exercise Price       $ 3  
Beneficial Conversion Feature and Hb Warrant Discount Amortization Expense   139 0 183 0
Debt Instrument, Convertible, Interest Expense   70   93  
Amortization   $ 83 $ 0 $ 115 $ 0
Hb Warrant [Member]
         
Percentage Of Weighted Average Price Of Company Common Stock       250.00%  
Warrants Exercise Price       $ 3