| In millions, except per share items | Mar-31-15 | Dec-31-14 | Sep-30-14 | Jun-30-14 | Mar-31-14 | Dec-31-13 | Sep-30-13 | Jun-30-13 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -1.0 | -7.0 | -13.6 | 19.3 | 26.9 | 16.6 | 7.9 | 2.8 |
| Depreciation and amortization [+] | 9.5 | 9.6 | 8.0 | 7.4 | 5.7 | 4.6 | 1.4 | 0.4 |
| Depreciation | 0.4 | 0.4 | 0.4 | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 |
| Amortization of intangible assets | 4.4 | 4.5 | 4.5 | 4.0 | 2.3 | 1.3 | 1.3 | 0.3 |
| Stock-based compensation | 8.6 | 7.6 | 6.7 | 5.8 | 5.2 | 4.3 | 3.5 | 2.4 |
| Tax benefit from stock-based compensation | -0.2 | -0.1 | -0.1 | 0.0 | 0.0 | | | |
| Deferred taxes | | | 0.0 | -2.9 | | | | |
| Change in working capital [+] | -4.5 | -0.5 | 7.7 | 10.4 | 15.4 | 9.9 | -1.4 | 0.7 |
| Accounts receivable | -19.2 | -10.5 | -10.1 | -17.7 | -1.5 | -4.4 | -6.7 | -1.7 |
| Inventories | -3.0 | -1.4 | 0.4 | 2.0 | 1.6 | 0.5 | -0.5 | -1.1 |
| Other current assets | -2.7 | -1.6 | -0.7 | -0.6 | -0.8 | -1.0 | -0.2 | 0.2 |
| Accounts payable | 2.2 | -1.9 | 1.6 | 0.5 | 1.7 | 0.1 | 0.6 | 0.4 |
| Deferred revenues | 0.2 | | 0.4 | | 0.2 | | | |
| Other | 17.9 | 14.4 | 16.1 | 26.0 | 14.2 | 14.8 | 5.5 | 2.0 |
| Other operating activities | 17.2 | 21.4 | 25.8 | -4.7 | -36.5 | -36.6 | -30.4 | -31.4 |
| Cash from operations | 29.6 | 31.0 | 34.6 | 35.2 | 16.5 | -1.2 | -19.0 | -25.0 |
| |
| Capital expenditures | -0.7 | -0.7 | -0.9 | -0.9 | -0.8 | -1.1 | -0.6 | -0.7 |
| Purchases of property and equipment | -0.7 | -0.7 | -0.9 | -0.9 | -0.8 | -1.1 | -0.6 | -0.5 |
| Acquisitions | | -41.8 | | -13.7 | | | | |
| Purchases of short-term investments, net | -20.4 | -0.3 | -43.2 | -45.2 | -44.9 | -43.9 | | |
| Purchases of short-term investments | -62.0 | -29.0 | -56.7 | -49.2 | -45.4 | -43.9 | | |
| Sales of short-term investments | 41.6 | 28.7 | 13.5 | 4.0 | 0.5 | | | |
| Other cash from investing | | 27.8 | | -0.3 | | | | 11.2 |
| Cash from investing | -35.2 | -15.0 | -58.2 | -60.2 | -34.7 | -34.1 | 10.4 | 10.5 |
| |
| Issuance of common stock, net | | | | | | 193.5 | | 182.4 |
| Option exercises | 3.9 | | 3.2 | 2.3 | 1.4 | | 0.7 | 0.6 |
| Other cash from financing | 18.6 | 15.7 | -50.5 | -66.4 | -132.3 | -133.2 | -67.6 | -64.9 |
| Cash from financing | 14.7 | 12.5 | 10.8 | -4.2 | -4.7 | 59.6 | 60.7 | 117.0 |
| |
| Free cash flow | 28.9 | 30.3 | 33.6 | 34.3 | 15.7 | -2.3 | -19.7 | -25.5 |
| Per share (diluted) | $1.36 | $1.44 | $1.59 | $1.61 | $0.74 | ($0.11) | ($1.17) | ($1.80) |
| |
| Cash paid for interest | 1.5 | | 1.5 | 0.7 | 0.9 | | 1.3 | 1.4 |