| In millions, except per share items | Sep-30-22 | Sep-30-21 | Sep-30-20 | Sep-30-19 | Sep-30-18 | Sep-30-17 | Sep-30-16 | Sep-30-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | -7.1 | 3.1 | -0.2 | -3.7 | -12.4 | -5.2 | -3.3 | -4.5 |
| Depreciation and amortization [+] | 1.3 | 1.3 | 0.9 | 1.0 | 1.7 | 2.0 | 2.2 | 2.3 |
| Depreciation | 1.3 | 1.2 | 0.7 | 0.7 | 1.1 | 1.4 | 1.6 | 1.6 |
| Amortization of intangible assets | 0.0 | 0.0 | 0.2 | 0.3 | | 0.6 | 0.7 | 0.7 |
| Asset impairment charges | 0.3 | | | | 11.8 | 0.6 | | |
| Stock-based compensation | 0.7 | 0.5 | 0.2 | 0.2 | | | | |
| Deferred taxes | -0.2 | | | | -4.5 | -0.1 | 0.3 | 0.1 |
| Change in working capital [+] | -2.3 | -3.9 | -3.3 | 3.0 | 3.5 | 3.7 | 2.7 | -0.8 |
| Accounts receivable | 0.0 | 0.8 | 0.3 | 1.0 | 0.3 | 1.6 | 2.9 | -4.4 |
| Inventories | -1.0 | 0.7 | -0.7 | 0.5 | 0.0 | 0.9 | 0.5 | -0.3 |
| Other current assets | 0.0 | -0.1 | -0.1 | 0.0 | 0.1 | 0.1 | -0.5 | 0.2 |
| Deferred revenues | | | | | | 0.3 | 1.2 | 2.8 |
| Other | -1.3 | -5.4 | -2.8 | 1.6 | 3.0 | 0.9 | -1.4 | 1.0 |
| Other operating activities | 1.7 | 0.3 | 5.8 | -1.2 | -0.8 | -0.3 | -0.2 | -0.2 |
| Cash from operations | -5.6 | 1.2 | 3.3 | -0.7 | -0.6 | 0.7 | 1.7 | -3.1 |
| |
| Capital expenditures [+] | -5.0 | -1.5 | -1.7 | -0.4 | -0.8 | -0.8 | -0.3 | -0.7 |
| Purchases of property and equipment | -2.6 | -1.5 | -1.7 | -0.4 | -0.8 | -0.8 | -0.3 | -0.7 |
| Capitalized product costs | -2.4 | | | | | | | |
| Cash from investing | -5.0 | -1.5 | -1.7 | -0.4 | -0.8 | -0.8 | -0.3 | -0.7 |
| |
| Issuance of common stock, net | 4.0 | 3.4 | 0.1 | 0.9 | | 1.3 | 0.1 | 0.7 |
| Option exercises | 0.1 | 0.3 | 0.1 | 0.9 | | | | 0.0 |
| Financing costs | | | | -0.1 | -0.1 | 0.0 | 0.0 | -0.1 |
| Other cash from financing | 0.6 | -0.5 | 1.7 | 4.2 | 1.4 | -1.8 | -1.7 | 0.8 |
| Cash from financing | 4.5 | 2.7 | 1.7 | 4.3 | 1.5 | -0.5 | -1.6 | 1.6 |
| |
| Free cash flow | -8.2 | -0.2 | 1.6 | -1.2 | -1.5 | -0.2 | 1.4 | -3.8 |
| Per share (diluted) | ($1.07) | ($0.03) | $0.22 | ($0.20) | ($0.32) | ($0.04) | $0.31 | ($0.89) |
| |
| Cash paid for interest | 0.0 | 0.0 | 0.1 | 0.6 | 0.4 | 0.5 | 0.5 | 0.4 |
| Cash paid for income taxes | 0.1 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 |