| In millions, except per share items | Sep-30-19 | Jun-30-19 | Mar-31-19 | Dec-31-18 | Sep-30-18 | Jun-30-18 | Mar-31-18 | Dec-31-17 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | -14.0 | -11.3 | 2.0 | 0.7 | 0.6 | -5.7 | 11.9 | -1.6 |
| Depreciation and amortization [+] | 23.5 | 23.1 | 11.1 | 12.2 | 11.9 | 11.7 | 6.1 | 5.7 |
| Depreciation | 4.3 | 4.2 | 3.6 | 3.7 | 3.6 | 3.7 | 2.7 | 2.9 |
| Amortization | 19.2 | 18.8 | 7.6 | 8.5 | 8.2 | 8.0 | 3.4 | 2.8 |
| Asset impairment charges | 6.1 | | | | | | 0.7 | 0.1 |
| Stock-based compensation | 5.3 | 5.5 | 4.2 | 4.1 | 5.0 | 4.7 | 3.7 | 3.5 |
| Deferred taxes | -2.9 | -4.9 | -7.3 | -0.4 | 0.1 | 1.3 | -17.7 | -0.3 |
| Change in working capital [+] | 7.0 | 4.5 | 5.0 | 1.7 | -1.8 | 1.2 | -1.3 | 29.9 |
| Accounts receivable | 3.2 | 3.8 | -0.4 | 1.0 | -0.6 | -1.8 | -4.6 | 1.3 |
| Other current assets | -0.6 | 5.0 | -5.4 | -1.4 | -0.7 | -1.6 | 0.1 | -0.6 |
| Accounts payable | 0.1 | 5.4 | -0.9 | -1.5 | -1.9 | 0.3 | -4.2 | 4.7 |
| Accrued expenses | 4.5 | -13.6 | 7.3 | 2.3 | 0.8 | -0.5 | 3.0 | 1.2 |
| Deferred revenues | 2.0 | 9.4 | 5.7 | 1.6 | 0.7 | 5.0 | 4.1 | -1.4 |
| Other | -2.3 | -5.5 | -1.4 | -0.2 | -0.1 | -0.2 | 0.3 | 24.7 |
| Other operating activities | 4.3 | 3.4 | 3.7 | 1.5 | 1.3 | 0.3 | -0.1 | -23.4 |
| Cash from operations | 29.3 | 20.3 | 18.7 | 19.8 | 17.0 | 13.6 | 3.3 | 13.9 |
| |
| Capital expenditures [+] | -3.5 | -3.3 | -2.8 | -3.2 | -2.1 | -4.5 | -3.3 | -5.4 |
| Purchases of property and equipment | -3.5 | -3.3 | -2.8 | -3.2 | -2.1 | -4.5 | -3.3 | -5.4 |
| Sales of property and equipment | 0.1 | 0.0 | 0.1 | 0.2 | 0.1 | 0.2 | 0.3 | 0.0 |
| Purchases of intangible assets | | | | | -4.5 | | -1.3 | -1.3 |
| Acquisitions | 0.3 | -132.4 | -489.6 | | | 0.0 | -144.6 | |
| Purchases of short-term investments | | | | -1.4 | | | | -5.0 |
| Purchases of short-term investments | | | | -1.4 | | | | -5.0 |
| Other cash from investing | 0.5 | 1.3 | | 2.8 | 0.9 | 1.7 | -1.4 | 5.0 |
| Cash from investing | -2.7 | -134.3 | -492.3 | -1.6 | -5.6 | -2.6 | -150.2 | -6.7 |
| |
| Issuance of common stock, net | | | | -21.5 | 199.3 | | | |
| Option exercises | 0.1 | 1.7 | 0.1 | 1.5 | 0.2 | 1.4 | 0.7 | 1.9 |
| Other cash from financing | -10.3 | -54.1 | 531.4 | 2.3 | -80.6 | -8.7 | 89.9 | 3.2 |
| Cash from financing | -10.4 | -55.8 | 531.3 | -20.7 | 118.5 | -10.1 | 89.2 | 1.3 |
| |
| Free cash flow | 25.8 | 17.0 | 16.0 | 16.6 | 14.8 | 9.0 | 0.0 | 8.5 |
| Per share (diluted) | $0.74 | $0.49 | $0.45 | $0.49 | $0.41 | $0.32 | $0.00 | $0.30 |
| |
| Cash paid for interest | 2.8 | 10.5 | | 1.8 | 0.4 | 2.6 | | |
| Cash paid for income taxes | 2.8 | 0.4 | 0.2 | 0.3 | -0.2 | 0.2 | 0.3 | -0.1 |