| In millions, except per share items | Dec-31-11 | Dec-31-10 | Dec-31-09 | Dec-31-08 | Dec-31-07 | Dec-31-06 | Dec-31-05 | Dec-31-04 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | S-1/A |
| Net income | -12.8 | -31.4 | -31.7 | -94.1 | -6.6 | -6.2 | -8.0 | -9.3 |
| Depreciation and amortization [+] | 6.0 | 6.3 | 17.7 | 7.6 | 5.5 | 2.7 | 1.4 | 1.0 |
| Depreciation | 6.0 | 6.3 | 17.7 | 5.0 | 4.5 | 2.7 | 1.4 | 1.0 |
| Stock-based compensation | 3.3 | 3.3 | 10.0 | 6.9 | 2.6 | 0.3 | 0.1 | |
| Deferred taxes | 0.0 | -0.4 | 0.2 | -0.8 | 0.1 | 0.0 | | |
| Change in working capital [+] | -2.5 | -6.7 | 6.7 | 4.3 | -1.8 | 1.3 | 2.0 | 2.5 |
| Accounts receivable | 1.3 | -12.6 | 4.7 | | | -0.6 | -0.7 | -1.6 |
| Inventories | -2.3 | -3.1 | -2.1 | -2.0 | -1.2 | -1.4 | -1.8 | 1.3 |
| Other current assets | -0.7 | -1.2 | 0.8 | | | | | |
| Accounts payable | -3.3 | 1.9 | -1.0 | 3.1 | -1.7 | 0.4 | 0.4 | -0.6 |
| Accrued expenses | 2.3 | 7.9 | 6.0 | | | | | |
| Deferred revenues | 0.1 | 0.4 | -1.8 | | | | | |
| Other operating activities | 3.0 | 14.5 | 4.8 | 62.3 | -1.2 | 0.7 | -0.7 | -1.2 |
| Cash from operations | -3.0 | -14.4 | 7.8 | -13.8 | -1.5 | -1.2 | -5.2 | -7.0 |
| |
| Capital expenditures [+] | -11.7 | -11.0 | -14.9 | -11.6 | -5.5 | -3.8 | -4.9 | -4.2 |
| Purchases of property and equipment | -10.4 | -11.0 | -14.9 | -11.6 | -5.5 | -3.8 | -4.9 | -4.2 |
| Capitalized product costs | -1.3 | | | | | | | |
| Acquisitions | | | | 0.0 | -13.7 | | | |
| Purchases of short-term investments, net | 27.7 | 5.9 | -6.4 | 5.1 | -32.6 | | | |
| Purchases of short-term investments | | -26.0 | -39.2 | -34.6 | -80.9 | | | |
| Sales of short-term investments | 27.7 | 31.9 | 32.8 | 39.7 | 48.3 | | | |
| Other cash from investing | 1.1 | 0.1 | -2.9 | -3.4 | | | | |
| Cash from investing | 17.1 | -5.1 | -24.2 | -10.0 | -73.9 | -4.1 | -4.9 | -4.2 |
| |
| Issuance of common stock, net | 0.4 | -0.3 | 27.4 | | | | | 0.0 |
| Other cash from financing | 1.4 | 11.5 | -14.4 | 3.6 | 111.4 | 6.4 | 4.0 | 15.3 |
| Cash from financing | 1.8 | 11.2 | 13.0 | 3.6 | 111.4 | 6.4 | 4.0 | 15.3 |
| |
| Free cash flow | -13.4 | -25.4 | -7.1 | -25.4 | -7.0 | -5.0 | -10.1 | -11.1 |
| Per share (diluted) | ($0.59) | ($1.03) | ($0.33) | ($1.20) | | | | ($3.81) |
| |
| Cash paid for interest | 2.0 | 1.0 | 1.6 | | | | | |