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Commitments and Contingencies (Details Textual) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 sqft | Mar. 31, 2012
Commitments and Contingencies (Additional Textual) [Abstract] |  |
Leasehold improvement allowance | $ 191 |
Deferred rent credit balance | 60 |
Leases office space for Canadian operations approximate | 10 |
Rent expense under the operating leases | 88 | 95
Interest rate prime plus | 1.50% |
Reduced capacity amount under Loan and Security Agreement | 1,260 |
Percentage of borrowing base on eligible accounts receivable | 75.00% |
Percentage of borrowing base on eligible inventory | 50.00% |
Percentage of borrowing base on outstanding foreign exchange contract | 10.00% |
Revolving line-of-credit up to | 240 |
Minimum amount of tangible networth | 1,680 |
Percentage of increase in tangible net worth on base of net income | 50.00% |
Percentage of increase in tangible net worth on base of proceeds from future issuances of equity | 50.00% |
Registered direct offering of equity securities | 1,560 |
Percentage of ownership interest by outsider | 40.00% |
Loan and Security Agreement |  |
Commitments and Contingencies (Additional Textual) [Abstract] |  |
Line of credit maturity date | Mar. 12, 2014 |
Silicon Valley Bank |  |
Commitments and Contingencies (Additional Textual) [Abstract] |  |
Letter of credit | 240 |
Letter of Credit |  |
Commitments and Contingencies (Additional Textual) [Abstract] |  |
Letter of credit | 240 |
Revolving Credit Facility |  |
Commitments and Contingencies (Additional Textual) [Abstract] |  |
Revolving line-of-credit up to | 1,500 |
Revolving Credit Facility | Silicon Valley Bank |  |
Commitments and Contingencies (Additional Textual) [Abstract] |  |
Letter of credit | 400 |
Reduced capacity amount under Loan and Security Agreement | $ 157 |
Lease Agreements |  |
Commitments and Contingencies (Additional Textual) [Abstract] |  |
Lease space for office and warehouse approximately | 19 |

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