| Net loss | -4.58M |
| Depreciation and amortization | 1.21M |
| Reduction of provision for sales returns and doubtful accounts | 0 |
| Stock-based compensation | 658K |
| Amortization of common stock issued for services | |
| Change in the fair value of warrant liability | |
| Accounts receivable | 1.03M |
| Inventory | -2.97M |
| Prepaid expenses and other current assets | -488K |
| Deferred revenue | |
| Accounts payable, accrued compensation, other accrued expenses, advance payments, and other current liabilities | -720K |
| Net cash provided by operating activities | |
| Purchase of equipment | -997K |
| Purchase of investments - held to maturity | |
| Net cash used in investing activities | |
| Proceeds from exercise of stock options | 38K |
| Proceeds from exercise of stock warrants | 4.29M |
| Net cash provided by financing activities | |
| Net decrease in cash and cash equivalents | -2.39M |
| Cash and cash equivalents, beginning of period | 9.27M |
| Cash and cash equivalents, end of period | 6.88M |
| Cash paid for interest | 22K |
| Cash paid for taxes | 1K |
| Issuance of 321,935 and 2,601,591 shares of common stock for cashless exercise of 395,229 and 3,778,811 warrants in 2011 and 2010, respectively | |
| Conversion of 20 and 60 shares of Series B Convertible Preferred Stock for 26,666 and 80,000 shares of common stock in 2011 and 2010, respectively | |
| Issuance of 49,685 shares of common stock for cashless exercise of 60,000 stock options in 2011 | |