| In millions, except per share items | Feb-29-20 | Nov-30-19 | Aug-31-19 | May-31-19 | Feb-28-19 | Nov-30-18 | Aug-31-18 | May-31-18 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -3.9 | -23.7 | 0.3 | 5.6 | -4.6 | 7.0 | -1.9 | 8.4 |
| Depreciation and amortization | 7.7 | 7.9 | 7.5 | 7.9 | 8.0 | 7.9 | 7.8 | 7.3 |
| Asset impairment charges | 0.6 | 7.2 | 0.2 | 0.1 | 0.6 | 3.6 | 9.8 | 0.5 |
| Stock-based compensation | 0.6 | -0.8 | 1.0 | 1.5 | 0.3 | 0.7 | 0.3 | 1.3 |
| Deferred taxes | -0.1 | -1.1 | -0.3 | -0.2 | -0.4 | -7.2 | -0.1 | -0.7 |
| Change in working capital [+] | -13.4 | 14.4 | -18.3 | 24.9 | -11.7 | 2.7 | -14.3 | 38.9 |
| Accounts receivable | -1.3 | 13.1 | -8.1 | 8.8 | -4.0 | 0.5 | -11.3 | 23.3 |
| Inventories | 0.1 | -3.4 | 5.0 | 5.7 | -11.5 | 7.2 | -2.3 | 6.1 |
| Other current assets | -1.6 | 2.6 | -3.9 | -2.4 | 3.9 | 10.2 | -0.1 | -7.4 |
| Other | -10.6 | 2.1 | -11.3 | 12.8 | -0.1 | -15.2 | -0.6 | 16.9 |
| Other operating activities | 1.2 | 17.0 | 17.9 | -36.3 | -0.5 | 4.9 | 19.9 | -32.1 |
| Cash from operations | -7.3 | 20.9 | 8.3 | 3.5 | -8.3 | 19.6 | 21.5 | 23.6 |
| |
| Capital expenditures [+] | -4.0 | -7.2 | -7.2 | -11.3 | -7.4 | -11.0 | -5.7 | -3.9 |
| Purchases of property and equipment | -4.0 | -7.2 | -7.2 | -11.3 | -7.4 | -11.0 | -5.7 | -3.9 |
| Sales of property and equipment | | 0.1 | | 5.5 | | | | |
| Acquisitions | | -5.6 | | | 2.8 | -23.6 | 0.4 | |
| Other cash from investing | | 5.6 | | | -5.6 | 1.9 | -0.8 | |
| Cash from investing | -4.0 | -7.1 | -7.2 | -5.8 | -10.2 | -32.7 | -6.1 | -3.9 |
| |
| Financing costs | | | | | | -1.9 | | 1.0 |
| Other cash from financing | 1.6 | | 2.2 | 2.7 | -2.3 | | -1.0 | -1.1 |
| Cash from financing | 1.6 | 0.0 | 2.2 | 2.7 | -2.3 | 1.9 | -1.0 | -2.1 |
| |
| Free cash flow | -11.3 | 13.7 | 1.1 | -7.8 | -15.7 | 8.6 | 15.8 | 19.7 |
| Per share (diluted) | ($0.25) | $0.31 | $0.02 | ($0.17) | ($0.35) | $0.19 | $0.36 | $0.44 |
| |
| Cash paid for interest | 4.2 | | 4.7 | 4.8 | 4.7 | | 4.3 | 3.8 |
| Cash paid for income taxes | 0.4 | | 2.7 | 3.2 | 0.3 | | 2.4 | 2.8 |