| In millions, except per share items | Sep-30-16 | Jun-30-16 | Mar-31-16 | Dec-31-15 | Sep-30-15 | Jun-30-15 | Mar-31-15 | Dec-31-14 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | -20.3 | -19.2 | -19.0 | -22.8 | -24.5 | -25.5 | -14.8 | -10.6 |
| Depreciation and amortization [+] | 25.8 | 24.3 | 23.0 | 22.0 | 21.4 | 20.6 | 19.4 | 17.2 |
| Depreciation | 12.8 | 12.0 | 11.1 | 10.4 | 9.9 | 9.2 | 8.5 | 7.7 |
| Amortization of intangible assets | 5.0 | 4.9 | 4.9 | 5.0 | 5.1 | 5.2 | 4.8 | 3.7 |
| Other amortization | 8.0 | 7.4 | 7.0 | 6.6 | 6.4 | 6.2 | 6.0 | 5.8 |
| Stock-based compensation | 9.1 | 9.1 | 8.7 | 8.8 | 7.9 | 8.4 | 8.7 | 7.1 |
| Deferred taxes | -3.0 | -3.1 | -3.2 | -0.6 | | | | |
| Change in working capital [+] | 12.6 | 15.5 | 10.3 | 0.3 | -7.1 | -0.4 | -2.8 | -2.7 |
| Accounts receivable | -1.2 | -6.9 | -7.5 | -9.1 | -16.4 | -6.8 | -9.2 | -8.7 |
| Other current assets | -1.7 | 0.2 | -1.5 | -2.2 | -1.6 | -2.5 | -1.8 | -1.3 |
| Accounts payable | -0.2 | 3.5 | 1.7 | 0.6 | 1.8 | 0.3 | 0.4 | 1.2 |
| Accrued expenses | -2.2 | 1.4 | 1.4 | -0.2 | 4.5 | 4.3 | 2.3 | 3.2 |
| Deferred revenues | 3.1 | 3.5 | 2.7 | 3.4 | 6.8 | 7.4 | 8.7 | 5.9 |
| Income taxes | | | | | | | | -3.5 |
| Other | 14.8 | 13.9 | 13.5 | 7.9 | 1.2 | 0.4 | 0.3 | 0.4 |
| Other operating activities | -1.5 | -1.1 | -1.5 | -2.8 | 5.9 | 4.5 | 3.6 | 3.5 |
| Cash from operations | 22.8 | 25.5 | 18.2 | 4.9 | 3.5 | 7.6 | 4.8 | 5.2 |
| |
| Capital expenditures [+] | -34.7 | -33.0 | -31.7 | -24.6 | -22.9 | -26.7 | -24.9 | -24.3 |
| Purchases of property and equipment | -21.2 | -20.1 | -19.9 | -14.5 | -12.5 | -16.3 | -14.0 | -13.3 |
| Capitalized product costs | -13.6 | -12.8 | -11.8 | -10.1 | -10.4 | -10.4 | -10.8 | -11.0 |
| Acquisitions | | | -18.4 | | | | | -13.1 |
| Purchases of short-term investments, net | 104.8 | 59.2 | -49.0 | -75.7 | -76.2 | -63.1 | | |
| Purchases of short-term investments | | -79.8 | -128.9 | -113.0 | -89.9 | -64.1 | | |
| Sales of short-term investments | 158.9 | 139.0 | 80.0 | 37.4 | 13.7 | 1.0 | | |
| Other cash from investing | -68.0 | -51.7 | -21.7 | | | 10.1 | | |
| Cash from investing | -16.4 | -43.9 | -120.8 | -100.2 | -100.2 | -92.8 | -38.0 | -37.4 |
| |
| Repurchase of common stock, net | -1.8 | -1.5 | -1.4 | -1.1 | -1.1 | -1.1 | -0.8 | -0.6 |
| Option exercises | 4.0 | 3.5 | 1.7 | 3.2 | 2.9 | 3.2 | 3.4 | 2.3 |
| Financing costs | | | | | | | | 0.0 |
| Other cash from financing | 9.1 | 8.5 | 4.8 | 96.3 | 100.7 | 110.1 | 109.8 | 18.2 |
| Cash from financing | 3.3 | 3.5 | 1.7 | 92.0 | 96.8 | 105.9 | 105.7 | 15.4 |
| |
| Free cash flow | 1.6 | 5.4 | -1.7 | -9.6 | -9.0 | -8.7 | -9.3 | -8.0 |
| Per share (diluted) | ($0.19) | ($0.12) | ($0.22) | ($0.32) | ($0.32) | ($0.32) | ($0.33) | ($0.32) |
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