| In millions, except per share items | Sep-30-15 | Jun-30-15 | Mar-31-15 | Dec-31-14 | Sep-30-14 | Jun-30-14 | Mar-31-14 | Dec-31-13 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | 2.0 | -1.2 | -4.0 | -4.5 | 6.2 | 4.2 | 6.2 | -16.2 |
| Depreciation and amortization [+] | 1.3 | 1.1 | 0.9 | | 0.8 | 0.6 | 0.5 | |
| Depreciation | 1.3 | 1.1 | 0.9 | | 0.8 | 0.6 | 0.5 | |
| Stock-based compensation | 6.2 | 5.1 | 4.3 | 2.2 | 2.0 | 1.9 | 1.4 | 1.1 |
| Deferred taxes | 12.5 | 3.0 | 2.9 | 2.5 | -8.3 | -0.2 | -0.1 | 1.8 |
| Change in working capital [+] | -14.7 | -19.6 | -14.5 | -15.1 | -15.5 | -7.6 | -8.3 | -7.5 |
| Accounts receivable | -10.2 | -10.9 | -6.4 | -7.1 | -6.2 | -6.1 | -4.1 | -4.9 |
| Other current assets | 1.8 | 2.1 | -0.5 | -0.4 | 0.2 | 0.0 | -0.9 | -0.7 |
| Deferred revenues | -0.1 | -1.3 | -1.4 | -0.8 | -2.3 | 0.7 | 1.7 | 1.4 |
| Other | -6.3 | -9.4 | -6.3 | -6.8 | -7.3 | -2.2 | -4.9 | -3.3 |
| Other operating activities | 5.0 | 12.2 | 11.3 | 11.6 | 9.9 | 8.2 | 8.2 | 25.7 |
| Cash from operations | 12.2 | 0.7 | 0.9 | -2.6 | -4.9 | 7.1 | 8.0 | 5.2 |
| |
| Capital expenditures | -1.2 | -0.8 | -1.3 | -1.6 | -2.1 | -2.2 | -1.4 | -1.0 |
| Purchases of property and equipment | -1.2 | -0.8 | -1.3 | -1.6 | -2.1 | -2.2 | -1.4 | -1.0 |
| Purchases of intangible assets | -0.6 | -0.6 | -0.7 | -0.7 | -0.9 | -0.8 | -0.5 | -0.3 |
| Acquisitions | -194.7 | -227.5 | | -111.1 | -110.1 | -26.3 | | -90.8 |
| Purchases of short-term investments | -12.0 | | | | | | | |
| Purchases of short-term investments | -12.0 | | | | | | | |
| Other cash from investing | | 0.3 | 0.3 | | | | | |
| Cash from investing | -208.3 | -228.7 | -112.8 | -113.3 | -112.9 | -29.0 | -25.5 | -92.0 |
| |
| Issuance of common stock, net | 8.2 | -1.8 | -1.6 | -1.0 | | | | 65.7 |
| Option exercises | 0.7 | 0.7 | 0.4 | | 0.5 | 0.5 | 0.2 | 0.1 |
| Financing costs | | | | | | | | -5.5 |
| Other cash from financing | 185.9 | 236.1 | 114.2 | 115.3 | 114.7 | -15.2 | -15.6 | 47.1 |
| Cash from financing | 193.3 | 233.6 | 112.2 | 113.8 | 113.9 | 32.0 | 31.9 | 118.1 |
| |
| Free cash flow | 11.0 | -0.2 | -0.5 | -4.2 | -7.0 | 4.9 | 6.6 | 4.2 |
| Per share (diluted) | $0.29 | $0.00 | ($0.01) | ($0.14) | ($0.27) | $0.21 | $0.31 | $0.26 |
| |
| Cash paid for interest | 19.1 | 15.3 | 9.6 | 7.8 | 6.3 | 6.6 | 5.7 | 4.6 |