| 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 | 10-K |
| Net income | -69.4 | -167.3 | -86.3 | -505.8 | -23.3 | -56.8 | -2.2 | -32.7 |
| Depreciation and amortization | 0.2 | 0.1 | 0.1 | 0.2 | 0.2 | 0.9 | 2.1 | 3.0 |
| Stock-based compensation | 0.4 | 4.4 | 13.3 | 0.5 | 1.4 | 3.0 | | |
| Change in working capital [+] | 7.7 | 0.2 | -1.7 | 5.9 | -5.4 | 2.2 | -3.2 | 18.5 |
| Accounts receivable | | | | 0.0 | 0.0 | 0.0 | -0.1 | 19.1 |
| Inventories | 0.0 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.0 | -1.2 |
| Other current assets | 0.0 | 0.1 | | | | | | |
| Other | 7.6 | 0.1 | -1.7 | 5.8 | | | | |
| Other operating activities | 46.8 | 148.3 | 53.1 | 473.6 | -4.5 | 5.9 | -33.7 | -49.9 |
| Cash from operations | -14.4 | -14.3 | -21.5 | -25.7 | -31.7 | -44.7 | -37.0 | -61.1 |
| |
| Capital expenditures | -0.1 | -0.3 | -0.1 | -0.1 | -0.2 | -0.1 | -0.1 | -1.8 |
| Purchases of property and equipment | -0.1 | -0.3 | -0.1 | -0.1 | -0.2 | -0.1 | -0.1 | -1.8 |
| Sales of short-term investments, net [+] | | | | 2.0 | 18.1 | -7.7 | -6.1 | 52.0 |
| Purchases of short-term investments | | | | | -13.9 | -56.8 | -21.8 | -7.3 |
| Sales of short-term investments | | | | 2.0 | 32.0 | 49.1 | 15.8 | 59.3 |
| Other cash from investing | 0.0 | 5.0 | | 1.7 | | | 0.0 | 0.0 |
| Cash from investing | -0.1 | 4.7 | -0.1 | 3.6 | 17.9 | -7.8 | -6.1 | 50.3 |
| |
| Issuance of common stock, net | | | | 2.9 | 10.2 | 52.7 | 16.0 | 21.6 |
| Other cash from financing | 3.8 | 21.2 | 17.8 | 18.3 | -0.1 | 0.1 | -0.1 | 0.5 |
| Cash from financing | 3.8 | 21.2 | 17.8 | 21.2 | 10.1 | 52.8 | 15.9 | 22.1 |
| |
| Free cash flow | -14.6 | -14.6 | -21.5 | -25.8 | -31.9 | -44.8 | -37.1 | -62.8 |
| Per share (diluted) | ($0.04) | ($21.45) | ($1,024.14) | ($23.21) | ($1.08) | ($1.99) | ($2.19) | ($0.79) |
| |
| Cash paid for interest | 0.0 | 0.0 | | | | | | |