| In millions, except per share items | Apr-30-18 | Apr-30-17 | Apr-30-16 | Apr-30-15 | Apr-30-14 | Apr-30-13 | Apr-30-12 | Apr-30-11 |
| Revenues | 74.6 | 74.5 | 70.2 | 64.3 | 62.8 | 65.9 | 55.6 | 42.5 |
| Revenue growth | 0.1% | 6.0% | 9.1% | 2.5% | -4.7% | 18.5% | 30.8% | -99.8% |
| Cost of goods sold | 49.5 | 49.2 | 44.0 | 40.5 | 40.4 | 41.3 | 36.4 | 22.5 |
| Gross profit | 25.1 | 25.2 | 26.3 | 23.9 | 22.4 | 24.6 | 19.2 | 20.0 |
| Gross margin | 33.6% | 33.9% | 37.4% | 37.1% | 35.6% | 37.3% | 34.5% | 47.1% |
| Selling, general and administrative | 20.7 | 20.8 | 18.6 | 17.2 | 16.4 | 16.7 | 16.8 | 13.8 |
| General and administrative | | | | | | | | 3.7 |
| EBITA | 3.1 | 2.7 | 4.4 | 4.5 | 2.3 | 2.4 | -1.2 | 0.9 |
| EBITA margin | 4.2% | 3.7% | 6.3% | 7.0% | 3.7% | 3.6% | -2.1% | 2.1% |
| Amortization of intangibles | 0.5 | 0.9 | 1.2 | 1.2 | | | | |
| EBIT | 2.6 | 1.8 | 3.2 | 3.3 | 2.3 | 2.4 | -1.2 | 0.9 |
| EBIT margin | 3.5% | 2.5% | 4.6% | 5.1% | 3.7% | 3.6% | -2.1% | 2.1% |
| Pre-tax income | 2.2 | 1.4 | 2.5 | 2.7 | 0.7 | 0.7 | -9.8 | -1.1 |
| Income taxes | 0.9 | 0.8 | 1.2 | 0.9 | 0.3 | 0.6 | -3.4 | -0.7 |
| Tax rate | 39.2% | 58.4% | 48.4% | 32.9% | 38.7% | 81.3% | 34.2% | 62.4% |
| Earnings from continuing ops | 1.3 | 0.6 | 1.3 | 1.8 | 0.4 | 0.1 | -6.4 | -0.4 |
| Earnings from discontinued ops | | | | | | -0.1 | -1.5 | -0.1 |
| Net income | 1.3 | 0.6 | 1.3 | 1.8 | 0.4 | 0.0 | -7.9 | -0.5 |
| Net margin | 1.8% | 0.8% | 1.9% | 2.8% | 0.7% | 0.1% | -14.3% | -1.1% |
| |
| Diluted EPS | $0.08 | $0.03 | $0.08 | $0.11 | $0.03 | $0.01 | ($0.45) | ($0.03) |
| Shares outstanding (diluted) | 17.4 | 18.0 | 17.3 | 16.3 | 16.3 | 16.0 | 14.4 | 12.8 |
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| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |