| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | 6.2 | 21.0 | 33.6 | 60.8 | 87.7 | 62.0 | 69.3 | 56.6 |
| Depreciation and amortization [+] | 0.1 | 0.1 | 0.1 | -20.3 | 0.1 | 0.1 | 0.1 | -20.3 |
| Depreciation | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 |
| Asset impairment charges | -2.6 | 2.6 | 2.2 | 6.0 | -4.3 | 4.3 | | |
| Stock-based compensation | 2.6 | 2.0 | 1.8 | 5.5 | 1.7 | 1.7 | 0.8 | 3.1 |
| Deferred taxes | 0.4 | 0.8 | 13.7 | -4.5 | -1.8 | -1.7 | -1.4 | 3.9 |
| Change in working capital [+] | 1.1 | 8.8 | 11.1 | -85.1 | -44.6 | -25.4 | -8.1 | -67.2 |
| Accounts receivable | -4.8 | 0.7 | 47.1 | -52.5 | -12.4 | -28.1 | 18.5 | -44.9 |
| Inventories | 0.3 | 10.4 | 4.5 | -57.1 | -22.8 | -22.9 | -28.6 | -35.1 |
| Other current assets | 2.5 | -7.1 | -5.5 | 6.3 | 2.4 | 1.4 | -1.4 | -5.8 |
| Accounts payable | 4.3 | -0.3 | -13.4 | 4.0 | -8.3 | 9.8 | -6.8 | 9.2 |
| Accrued expenses | -1.1 | 5.1 | -21.6 | 14.3 | -3.5 | 14.4 | 10.3 | 9.4 |
| Other operating activities | 19.2 | 12.8 | 10.9 | 91.5 | 17.3 | 31.0 | 9.0 | 79.3 |
| Cash from operations | 27.0 | 48.1 | 73.5 | 53.8 | 56.1 | 72.0 | 69.7 | 55.4 |
| |
| Capital expenditures [+] | -0.9 | -0.6 | -1.0 | -1.7 | -0.5 | -0.5 | -0.9 | -0.9 |
| Purchases of property and equipment | 0.0 | -0.1 | -0.6 | -0.1 | 0.0 | -0.1 | 0.0 | -0.9 |
| Capitalized product costs | -0.8 | -0.5 | -0.4 | -1.6 | -0.4 | -0.4 | -0.9 | |
| Purchases of intangible assets | -0.5 | | | | | | | |
| Other cash from investing | | | | 0.9 | | | | -4.4 |
| Cash from investing | -1.4 | -0.6 | -1.0 | -0.8 | -0.5 | -0.5 | -0.9 | -5.3 |
| |
| Issuance of common stock, net | | | | | | | | 0.6 |
| Option exercises | 1.6 | 2.5 | 1.1 | 0.8 | 0.7 | | | |
| Financing costs | | | | -11.9 | | -11.9 | | |
| Other cash from financing | -15.0 | 1.6 | 1.9 | -12.7 | -0.2 | -126.5 | -3.9 | -5.7 |
| Cash from financing | -16.6 | -0.9 | 0.9 | -1.6 | -0.9 | -114.5 | -3.9 | -5.0 |
| |
| Free cash flow | 27.0 | 48.0 | 73.0 | 53.7 | 56.1 | 71.9 | 69.7 | 54.5 |
| Per share (diluted) | $0.04 | $0.07 | $0.10 | $0.08 | $0.08 | $0.10 | $0.10 | $0.08 |
| |
| Cash paid for interest | 15.5 | 13.9 | 19.5 | 21.7 | 2.9 | 10.6 | 14.3 | 44.0 |