| In millions, except per share items | Mar-31-18 | Dec-31-17 | Sep-30-17 | Jun-30-17 | Mar-31-17 | Dec-31-16 | Sep-30-16 | Jun-30-16 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | 0.1 | -95.7 | 6.4 | 4.2 | 5.7 | 1.7 | 8.1 | 4.2 |
| Depreciation and amortization | 32.6 | 39.9 | 42.4 | 42.9 | 35.7 | 42.3 | 43.7 | 41.0 |
| Stock-based compensation | 3.7 | 3.7 | 3.8 | 4.3 | 2.7 | 4.2 | 4.3 | 4.9 |
| Tax benefit from stock-based compensation | | | | | | 0.0 | -0.1 | 0.0 |
| Deferred taxes | 0.6 | 13.7 | -3.5 | 2.2 | 1.9 | -8.0 | -6.2 | -0.5 |
| Change in working capital [+] | -3.2 | -19.0 | -8.4 | -26.0 | 24.8 | 24.3 | -21.4 | -17.1 |
| Accounts receivable | -13.1 | -10.7 | -2.0 | -1.1 | 31.9 | -31.6 | 7.0 | 4.1 |
| Other current assets | 9.5 | -14.5 | 4.7 | -5.8 | -7.7 | 21.5 | -9.9 | -5.8 |
| Accounts payable | 1.3 | -0.9 | 0.7 | -0.1 | -0.8 | 1.2 | -0.5 | 0.1 |
| Accrued expenses | -4.3 | 3.2 | -0.2 | 2.6 | -5.6 | 5.4 | 2.4 | 1.4 |
| Deferred revenues | 3.3 | 3.9 | -11.6 | -21.7 | 7.0 | 27.7 | -20.4 | -16.9 |
| Other operating activities | -0.6 | 95.6 | -0.3 | 0.1 | 0.4 | 2.9 | 2.1 | 1.6 |
| Cash from operations | 33.2 | 38.2 | 40.4 | 27.7 | 71.2 | 67.5 | 30.6 | 34.1 |
| |
| Capital expenditures [+] | -18.1 | -52.1 | -12.9 | -10.9 | -27.8 | -46.4 | -35.4 | -21.6 |
| Purchases of property and equipment | -0.7 | -0.2 | -0.3 | -0.4 | -0.4 | -0.7 | -0.9 | -1.1 |
| Capitalized product costs | -17.3 | -51.9 | -12.6 | -10.5 | -27.4 | -45.7 | -34.5 | -20.5 |
| Acquisitions | | | | | | 0.0 | | |
| Sales of short-term investments, net [+] | 9.3 | 20.4 | 15.8 | 12.7 | 22.0 | 52.1 | -31.8 | -30.2 |
| Purchases of short-term investments | -3.3 | -6.7 | -7.7 | -21.2 | -3.9 | -8.0 | -31.8 | -30.2 |
| Sales of short-term investments | 12.5 | 27.1 | 23.5 | 33.9 | 25.9 | 60.1 | | |
| Other cash from investing | | 0.3 | 0.6 | -0.4 | | -48.2 | 5.9 | 7.6 |
| Cash from investing | -8.8 | -31.4 | 3.4 | 1.4 | -5.8 | -42.5 | -61.3 | -44.1 |
| |
| Cash dividends paid | -2.5 | -2.5 | | | | | | |
| Repurchase of common stock, net | | -1.7 | -1.8 | -0.3 | -4.5 | -9.3 | -11.7 | -15.2 |
| Option exercises | 0.1 | | 0.1 | 5.5 | 0.4 | 0.1 | 3.4 | 0.2 |
| Other cash from financing | -1.6 | -92.5 | -3.0 | 7.4 | -2.2 | -2.2 | 3.1 | -2.1 |
| Cash from financing | -4.3 | -96.6 | -5.0 | 1.6 | -7.1 | -11.6 | -12.0 | -17.5 |
| |
| Free cash flow | 32.4 | 37.9 | 40.1 | 27.3 | 70.9 | 66.8 | 29.7 | 33.0 |
| Per share (diluted) | $0.30 | ($0.28) | $0.55 | $0.34 | $0.88 | $0.41 | ($0.10) | $0.24 |
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