| 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 |
| Revenues: | | | | | | | | |
| Total revenues | 519.2 | 515.8 | 477.5 | 427.5 | 383.3 | 309.1 | 254.7 | 218.1 |
| Total revenues growth | 0.7% | 8.0% | 11.7% | 11.5% | 24.0% | 21.4% | 16.8% | -9.0% |
| Costs and expenses: | | | | | | | | |
| Cost of hardware | 8.5 | 16.9 | 12.2 | 14.6 | 11.1 | 22.9 | 17.3 | 12.3 |
| Sales and marketing | 91.5 | 85.9 | 76.2 | 63.4 | 64.1 | 65.6 | 70.4 | 53.2 |
| Research and development | 55.6 | 61.4 | 56.5 | 57.8 | 51.8 | 58.2 | 58.1 | 46.2 |
| General and administrative | 45.1 | 38.5 | 32.7 | 25.0 | 19.5 | 16.0 | 13.5 | 12.4 |
| Restructuring | 5.4 | | 1.2 | 14.7 | | | | |
| Depreciation and amortization | 32.2 | 22.1 | 17.9 | 15.7 | 14.7 | 13.3 | 10.5 | 8.5 |
| Total costs and expenses | 240.9 | 230.1 | 209.4 | 191.1 | 161.0 | 176.0 | 313.1 | 251.7 |
| Income (loss) from operations | 9.4 | 9.4 | 17.3 | -1.2 | -2.8 | -35.6 | -58.4 | -33.6 |
| Operating margin | 1.8% | 1.8% | 3.6% | -0.3% | -0.7% | -11.5% | -22.9% | -15.4% |
| Gain (loss) on investments, net | -0.2 | -0.6 | | | | | | |
| Interest income | 2.1 | 6.1 | 7.1 | 5.3 | 3.1 | 1.6 | | |
| Interest expense | -3.4 | -2.1 | | | | | | |
| Income (loss) before income taxes | 10.5 | 17.1 | 37.1 | 4.1 | 0.3 | -34.0 | -56.0 | -29.6 |
| Provision for income taxes | 7.8 | -82.4 | -4.0 | 0.0 | | | | 0.2 |
| Tax rate | 74.3% | | | 0.9% | | | | |
| Net income (loss) | 2.7 | 99.5 | 41.1 | 4.1 | 0.3 | -34.0 | -56.0 | -29.8 |
| |
| Basic earnings (loss) per share: | | | | | | | | |
| Net income (loss) | 2.7 | 99.5 | 41.1 | 4.1 | 0.3 | -34.0 | -56.0 | -29.8 |
| Net income (loss) available to common stockholders | 0.0 | 0.1 | 0.0 | | | | | |
| |
| Basic weighted average common shares outstanding | 0.1 | 0.1 | 0.1 | 51.5 | 0.0 | 46.6 | 45.4 | 44.7 |
| |
| Basic earnings (loss) per common share | $0.05 | $1.82 | $0.77 | $0.08 | $0.01 | ($0.73) | ($1.23) | ($0.67) |
| |
| Diluted earnings (loss) per share: | | | | | | | | |
| Net income (loss) | 2.7 | 99.5 | 41.1 | 4.1 | 0.3 | -34.0 | -56.0 | -29.8 |
| |
| Net income (loss) available to common stockholders | | | | | | | | |
| Basic weighted average common shares outstanding | 0.1 | 0.1 | 0.1 | 51.5 | 0.0 | 46.6 | 45.4 | 44.7 |
| Diluted weighted average shares common outstanding | 0.1 | 0.1 | 0.1 | 52.9 | 0.1 | 46.6 | 45.4 | 44.7 |
| Diluted earnings (loss) per common share | $2,680.00 | $98,346.00 | $40,808.00 | $0.08 | $0.01 | ($0.73) | ($1.23) | ($0.67) |