| In millions, except per share items | Oct-31-15 | Jul-31-15 | Apr-30-15 | Jan-31-15 | Oct-31-14 | Jul-31-14 | Apr-30-14 | Jan-31-14 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | 13.9 | 18.2 | 6.0 | 14.0 | 28.0 | 45.3 | 15.1 | 30.6 |
| Depreciation and amortization | 8.3 | 8.4 | 8.5 | 8.6 | 8.8 | 8.9 | 9.0 | 8.2 |
| Stock-based compensation | 7.9 | 9.9 | 8.3 | 8.7 | 8.7 | 8.4 | 9.1 | 8.9 |
| Tax benefit from stock-based compensation | -0.1 | -0.8 | 0.4 | -0.3 | -1.3 | -0.9 | 0.8 | -2.2 |
| Deferred taxes | | | 5.1 | -5.1 | | | -8.1 | 6.6 |
| Change in working capital [+] | -11.3 | 6.1 | -17.8 | -46.9 | -35.4 | -6.3 | 21.6 | 99.6 |
| Accounts receivable | -12.2 | 3.6 | -9.4 | 30.1 | 5.0 | -4.3 | -37.8 | 36.2 |
| Inventories | -20.1 | 15.1 | 14.6 | -38.6 | -63.6 | -24.0 | 62.4 | 45.0 |
| Other current assets | 12.7 | 11.2 | 0.9 | -3.8 | 16.1 | 0.4 | 1.3 | 0.3 |
| Accounts payable | 1.6 | 1.4 | -28.2 | -35.3 | -0.4 | 42.1 | -8.5 | 21.6 |
| Accrued expenses | 4.3 | -21.0 | 3.0 | 7.6 | 3.0 | -4.5 | 0.4 | -4.8 |
| Income taxes | 2.5 | -4.3 | 1.4 | -6.9 | 4.6 | -16.1 | 3.7 | 1.4 |
| Other operating activities | 4.4 | 30.4 | 2.7 | 9.2 | -6.6 | 16.1 | 15.0 | -22.8 |
| Cash from operations | 23.2 | 72.2 | 13.2 | -11.7 | 2.2 | 71.5 | 62.4 | 129.0 |
| |
| Capital expenditures [+] | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Sales of property and equipment | -3.0 | -2.5 | -1.6 | -1.7 | -2.9 | -5.2 | -1.7 | -3.7 |
| Purchases of intangible assets | | -4.8 | | | | | -12.3 | |
| Acquisitions | | | | | | | -4.5 | |
| Purchases of short-term investments, net | -44.7 | 45.4 | -1.1 | 5.9 | -14.4 | -45.2 | -69.4 | -26.1 |
| Purchases of short-term investments | -112.2 | -43.3 | -95.0 | -75.3 | -69.8 | -116.4 | -101.3 | -42.4 |
| Sales of short-term investments | 67.5 | 88.7 | 93.9 | 81.3 | 55.4 | 71.2 | 31.9 | 16.3 |
| Other cash from investing | | | 0.3 | | | | 19.4 | |
| Cash from investing | -47.8 | 38.1 | -2.4 | 4.2 | -17.3 | -50.3 | -68.4 | -29.7 |
| |
| Option exercises | 0.3 | 4.6 | 0.5 | 4.8 | 1.2 | 6.8 | 0.5 | 3.7 |
| Other cash from financing | 0.6 | 9.8 | 0.4 | 6.4 | 3.6 | 14.4 | -4.5 | 6.2 |
| Cash from financing | 0.3 | 5.2 | -0.1 | 1.6 | 2.4 | 7.6 | -4.9 | 2.5 |
| |
| Free cash flow | 23.2 | 72.2 | 13.2 | -11.7 | 2.2 | 71.5 | 62.4 | 129.0 |
| Per share (diluted) | $0.39 | $1.21 | $0.22 | ($0.19) | $0.04 | $1.23 | $1.10 | $2.30 |
| |
| Cash paid for interest | 0.5 | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 | 0.5 | 0.6 |