| 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 | 0.2 | 1.1 | 1.7 | 2.3 | 1.8 | 2.5 | 1.4 | 2.3 |
| Depreciation and amortization [+] | 0.4 | 0.3 | -0.3 | 0.5 | 0.3 | 0.3 | -0.4 | 0.5 |
| Depreciation | 0.4 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Amortization of intangible assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Stock-based compensation | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 |
| Deferred taxes | 0.0 | 0.0 | -9.3 | 9.4 | -0.1 | -0.2 | 0.6 | 0.1 |
| Change in working capital [+] | -0.5 | -5.0 | 10.6 | -9.4 | 1.2 | -0.6 | 41.8 | -43.5 |
| Accounts payable | | | | | | | 0.5 | |
| Accrued expenses | 2.1 | -2.5 | 12.0 | -10.3 | 1.4 | -0.3 | 43.9 | -45.5 |
| Other | -2.6 | -2.5 | -1.4 | 0.9 | -0.2 | -0.2 | -2.6 | 1.9 |
| Other operating activities | 4.2 | 3.6 | 7.8 | 7.6 | 5.3 | 8.2 | -42.1 | 48.4 |
| Cash from operations | 4.4 | 0.0 | 10.6 | 10.5 | 8.6 | 10.3 | 1.4 | 7.7 |
| |
| Capital expenditures [+] | -4.6 | -0.7 | -0.9 | -0.3 | -0.5 | -1.9 | -0.1 | -0.2 |
| Purchases of property and equipment | -4.6 | -0.7 | -0.9 | -0.3 | -0.5 | -1.9 | -0.1 | -0.2 |
| Sales of property and equipment | 0.1 | | | | 0.0 | | -0.1 | 0.2 |
| Acquisitions | | | | | | | -13.9 | |
| Sales of short-term investments, net [+] | | | 32.4 | -0.2 | 8.7 | | | |
| Purchases of short-term investments | | | 0.2 | -0.2 | | | | |
| Sales of short-term investments | | | 32.1 | | 8.7 | | | |
| Other cash from investing | -17.7 | -9.1 | -42.6 | -8.2 | -55.0 | -79.3 | -128.0 | -77.6 |
| Cash from investing | -22.2 | -9.8 | -11.1 | -8.8 | -46.8 | -81.3 | -142.1 | -77.7 |
| |
| Cash dividends paid | -0.9 | -0.9 | -0.9 | -0.9 | -0.9 | -0.9 | -0.9 | -0.9 |
| Issuance of common stock, net | 0.2 | | 0.3 | | 0.2 | | 0.3 | |
| Other cash from financing | 23.8 | 7.0 | 5.8 | 12.2 | 7.8 | 32.1 | 48.9 | 65.4 |
| Cash from financing | 23.1 | 6.1 | 5.2 | 11.3 | 7.1 | 31.3 | 48.3 | 64.5 |
| |
| Free cash flow | -0.2 | -0.6 | 9.7 | 10.2 | 8.0 | 8.4 | 1.3 | 7.5 |
| Per share (diluted) | ($0.06) | ($0.19) | $2.80 | $2.95 | $2.33 | $2.43 | $0.38 | $2.20 |
| |
| Cash paid for interest | 5.8 | 4.8 | 3.4 | 1.9 | 0.9 | 1.2 | 0.5 | 1.4 |
| Cash paid for income taxes | | 0.4 | | | | | | 0.5 |