| 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 sales | 155.6 | 169.2 | 192.4 | 205.7 | 168.9 | 191.3 | 193.6 | 206.3 |
| Net sales growth | -7.9% | -11.6% | -0.6% | -0.3% | -5.5% | 2.7% | -3.6% | -6.8% |
| Gross profit | 35.2 | 43.9 | 46.3 | 48.8 | 36.9 | 43.5 | 49.1 | 51.6 |
| Gross margin | 22.6% | 25.9% | 24.1% | 23.7% | 21.8% | 22.7% | 25.4% | 25.0% |
| Selling, general and administrative | 26.8 | 24.1 | 26.6 | 30.2 | 28.7 | 22.8 | 26.3 | 28.0 |
| Depreciation and amortization | 7.7 | 7.9 | 7.5 | 7.8 | 8.0 | 7.9 | 7.8 | 7.3 |
| Restructuring and severance | 0.2 | 0.4 | 0.8 | 2.8 | 1.1 | 1.7 | 0.4 | 0.2 |
| Interest expense | -4.6 | -3.2 | -5.1 | -5.2 | -5.0 | -3.4 | -4.7 | -4.6 |
| Merger, acquisition, and integration related expense | 0.8 | 4.0 | 5.9 | | 0.3 | 3.4 | -0.3 | 0.3 |
| Other (income) expense, net | -0.1 | -0.4 | -1.6 | -0.2 | -0.8 | -1.3 | 0.6 | -0.1 |
| Total other costs and expenses | 40.0 | 65.6 | 45.4 | 86.4 | 42.3 | 42.4 | 48.7 | 40.7 |
| Income (loss) before income taxes | -4.8 | -21.7 | 0.9 | 7.2 | -5.4 | 1.1 | 0.4 | 10.9 |
| Income tax (benefit) expense | -0.9 | 2.0 | 0.6 | 1.6 | -0.8 | -5.9 | 2.3 | 2.5 |
| Net income (loss) | -3.9 | -23.7 | 0.3 | 5.6 | -4.6 | 7.0 | -1.9 | 8.4 |
| |
| Earnings Per Share | | | | | | | | |
| Net income (loss) per share - Basic and Diluted | ($0.09) | ($0.53) | $0.01 | $0.13 | ($0.10) | $0.15 | ($0.04) | $0.19 |
| |
| Weighted average shares outstanding - Basic and Diluted | 44.9 | 44.8 | 44.8 | 44.8 | 44.7 | 44.6 | 44.5 | 44.6 |