| In millions, except per share items | Dec-31-09 | Dec-31-08 | Dec-31-07 | Dec-31-06 | Dec-31-05 | Dec-31-04 | Dec-31-03 | Dec-31-02 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | -43.0 | -116.2 | -148.1 | -130.0 | -78.0 | -88.8 | -59.6 | -32.1 |
| Depreciation and amortization | 6.9 | 7.2 | 7.2 | 6.7 | 6.3 | 5.5 | 5.4 | 5.9 |
| Stock-based compensation | 13.0 | 21.3 | 20.9 | 18.9 | 2.9 | 9.3 | 7.1 | 7.2 |
| Change in working capital [+] | 28.8 | -21.3 | 33.4 | -9.2 | -14.5 | 38.7 | -5.5 | 3.8 |
| Accounts receivable | 3.6 | -4.0 | -2.0 | -0.2 | 1.2 | -0.4 | -2.2 | 0.3 |
| Inventories | -34.8 | -32.4 | | | | | | |
| Accounts payable | 5.2 | -3.1 | 4.1 | 4.1 | -0.4 | 0.9 | -0.8 | -0.9 |
| Other | 54.9 | 18.2 | 31.4 | -13.2 | -15.3 | 38.1 | -2.6 | 4.4 |
| Other operating activities | 79.7 | -0.6 | -0.9 | -0.2 | 1.7 | 3.4 | 2.8 | 3.8 |
| Cash from operations | 85.5 | -109.6 | -87.5 | -113.7 | -81.6 | -32.0 | -49.8 | -11.4 |
| |
| Capital expenditures | -1.8 | -4.8 | -6.4 | -6.5 | -5.7 | -17.0 | -12.6 | -9.9 |
| Purchases of property and equipment | -1.8 | -4.8 | -6.4 | -6.5 | -5.7 | -17.0 | -12.6 | -9.9 |
| Purchases of short-term investments | -25.1 | -63.4 | -171.1 | -238.6 | -360.9 | -256.8 | -288.6 | -305.5 |
| Purchases of short-term investments | -25.1 | -63.4 | -171.1 | -238.6 | -360.9 | -256.8 | -288.6 | -305.5 |
| Other cash from investing | 31.4 | 174.5 | 283.7 | 231.1 | 322.7 | 246.6 | 311.6 | 184.6 |
| Cash from investing | 4.5 | 106.3 | 106.1 | -14.0 | -43.8 | -27.2 | 10.5 | -130.8 |
| |
| Issuance of common stock, net | | | | | 126.4 | 66.8 | 71.3 | 110.7 |
| Other cash from financing | 1.6 | 24.2 | 5.0 | 11.0 | 4.0 | 12.1 | 10.0 | 50.7 |
| Cash from financing | 1.6 | 24.2 | 5.0 | 11.0 | 130.4 | 78.9 | 81.3 | 161.4 |
| |
| Free cash flow | 83.7 | -114.4 | -93.9 | -120.3 | -87.3 | -48.9 | -62.4 | -21.3 |
| Per share (diluted) | $1.21 | ($1.67) | ($1.38) | ($1.80) | ($1.43) | ($0.90) | ($1.32) | ($0.50) |