| In millions, except per share items | Apr-30-22 | Apr-30-21 | Apr-30-20 | Apr-30-19 | Apr-30-18 | Apr-30-17 | Apr-30-16 | Apr-30-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 15.9 | 7.4 | -5.9 | -2.5 | -2.6 | 0.0 | -10.2 | -3.6 |
| Depreciation and amortization [+] | 0.2 | 0.6 | 0.5 | 0.6 | 0.5 | 1.4 | 3.0 | 3.3 |
| Depreciation | 0.2 | 0.6 | 0.5 | 0.6 | 0.5 | 1.4 | 3.0 | 3.3 |
| Asset impairment charges | | | | | | 0.2 | | 2.6 |
| Stock-based compensation | 0.2 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 |
| Deferred taxes | 1.8 | 2.5 | -1.8 | -0.3 | 0.6 | 0.6 | -5.3 | 3.2 |
| Change in working capital [+] | 5.2 | 1.0 | 0.4 | 0.8 | 2.3 | -0.3 | -3.4 | -1.2 |
| Accounts receivable | | | | | | 0.9 | 0.3 | -0.4 |
| Income taxes | 3.7 | -0.3 | 0.3 | 0.8 | -0.8 | 0.5 | -0.7 | 0.7 |
| Other | 1.5 | 1.3 | 0.2 | 0.1 | 3.0 | -1.7 | -3.0 | -1.5 |
| Other operating activities | -7.8 | 1.1 | 7.4 | -0.9 | -3.2 | 8.4 | 19.3 | 5.6 |
| Cash from operations | 15.5 | 12.6 | 0.8 | -2.0 | -2.2 | 10.4 | 3.5 | 10.0 |
| |
| Capital expenditures | -1.3 | 0.0 | 0.0 | 0.0 | -0.1 | -0.2 | -0.8 | -1.1 |
| Purchases of property and equipment | -1.3 | 0.0 | 0.0 | 0.0 | -0.1 | -0.2 | -0.8 | -1.1 |
| Other cash from investing | 0.1 | | | 0.2 | -0.1 | | 3.6 | |
| Cash from investing | -1.2 | 0.0 | 0.0 | 0.2 | -0.1 | -0.2 | 2.8 | -1.1 |
| |
| Repurchase of common stock, net | -21.9 | -5.1 | | | | | | |
| Financing costs | -0.1 | -0.1 | -0.1 | 0.0 | 0.0 | | | |
| Other cash from financing | -1.5 | -0.3 | 2.4 | -0.6 | 1.8 | -12.9 | -3.8 | -4.4 |
| Cash from financing | -23.4 | -5.3 | 2.5 | -0.5 | 1.8 | -12.9 | -3.8 | -4.4 |
| |
| Free cash flow | 14.2 | 12.6 | 0.8 | -2.0 | -2.3 | 10.2 | 2.7 | 8.8 |
| Per share (diluted) | $1.97 | $1.62 | $0.09 | ($0.25) | ($0.28) | $1.26 | $0.33 | $1.12 |
| |
| Cash paid for interest | 0.2 | 0.1 | 0.2 | 0.2 | | 0.3 | 1.3 | 1.6 |
| Cash paid for income taxes | 0.0 | 0.2 | -0.2 | -0.2 | 0.0 | -0.1 | 0.9 | 0.2 |