| Current assets: | |
| Cash and cash equivalents | 36.14M |
| Short-term investments | 6.09M |
| Accounts receivable, net | |
| Inventory | |
| Prepaid expenses and other current assets | 1.38M |
| Total current assets | 43.6M |
| Property and equipment, net | 389K |
| Intangible and other assets, net | |
| Total assets | 44.7M |
| Current liabilities: | |
| Accounts payable | 1.1M |
| Accrued expenses and other current liabilities | |
| Deferred revenue - current portion | |
| Total current liabilities | 8.15M |
| Deferred revenue, less current portion | |
| Other long-term liabilities | 488K |
| Commitments and contingencies | 0 |
| Stockholders' equity: | |
| Common stock, $0.001 par value: 120,000,000 and 60,000,000 shares authorized at June 30, 2011 and December 31, 2010, respectively; 62,756,411 and 51,719,187 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively | 63K |
| Additional paid-in capital | 461.83M |
| Accumulated deficit | -425.83M |
| Total stockholders' equity | 36.06M |
| Total liabilities and stockholders' equity | 44.7M |