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Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 26,661 | $ 25,497
Short-term investments | 0 | 287
Accounts receivable, net of allowance of $0 and $5 at September 30, 2012 and December 31, 2011, respectively | 3,950 | 6,096
Inventories | 9,682 | 6,444
Prepaid expenses and other current assets | 3,243 | 1,415
Total current assets | 43,536 | 39,739
Non-current assets: |  |
Property and equipment, net | 1,801 | 2,032
Goodwill | 1,316 | 1,316
Intangible assets, net | 1,597 | 1,748
Restricted cash | 302 | 303
Other assets | 101 | 229
Total assets | 48,653 | 45,367
Current liabilities: |  |
Accounts payable | 5,700 | 4,680
Accrued liabilities | 8,087 | 5,825
Deferred revenue | 716 | 111
Debt - current | 4,919 | 2,519
Warrant liability | 7,876 | 7,979
Total current liabilities | 27,298 | 21,114
Non-current liabilities: |  |
Debt - non-current | 3,307 | 4,697
Other non-current liabilities | 1,132 | 1,243
Total liabilities | 31,737 | 27,054
Commitments and contingencies |  |
Stockholders' equity: |  |
Preferred stock | 0 | 9,496
Common stock | 55 | 51
Additional paid-in capital | 474,997 | 452,701
Accumulated deficit | (458,136) | (443,935)
Total stockholders' equity | 16,916 | 18,313
Total liabilities and stockholders' equity | $ 48,653 | $ 45,367

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