| In millions, except per share items | Jun-30-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | 8.3 | 8.2 | 5.9 | 10.9 | 16.4 | 13.3 | 13.0 | -6.2 |
| Depreciation and amortization [+] | | 5.1 | 5.2 | 5.6 | 5.2 | 5.0 | 5.4 | 6.0 |
| Depreciation | | 5.2 | 4.7 | 5.1 | 4.8 | 5.0 | 5.0 | 5.6 |
| Amortization of intangible assets | | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Stock-based compensation | | 1.4 | 1.5 | 1.5 | 1.6 | 1.7 | 1.3 | 1.2 |
| Deferred taxes | | 1.3 | 0.0 | 1.6 | 0.1 | 2.7 | 1.0 | -6.0 |
| Change in working capital [+] | | -7.0 | 6.8 | -5.0 | -8.9 | -9.0 | 4.5 | -4.5 |
| Accounts receivable | | -2.3 | 0.1 | -2.7 | -0.5 | 0.3 | -3.7 | 0.8 |
| Inventories | | 2.3 | | | | -4.4 | | |
| Other current assets | | -3.3 | -0.8 | -0.4 | 2.6 | 0.0 | 0.3 | -1.0 |
| Accounts payable | | 2.5 | 0.3 | -1.7 | -1.0 | 0.8 | -0.4 | 1.2 |
| Other | | -6.2 | 7.2 | -0.2 | -10.0 | -5.7 | 8.3 | -5.5 |
| Other operating activities | 0.2 | 1.9 | 0.6 | -0.2 | 1.4 | 0.7 | 3.0 | 24.0 |
| Cash from operations | 8.5 | 11.0 | 19.9 | 14.4 | 15.8 | 14.5 | 28.3 | 14.6 |
| |
| Capital expenditures | 0.0 | -5.7 | -6.9 | -6.6 | -6.9 | -9.6 | -6.5 | -4.4 |
| Purchases of property and equipment | | -5.7 | -6.9 | -6.6 | -6.9 | -9.6 | -6.5 | -4.4 |
| Acquisitions | | -25.0 | -6.3 | 0.0 | -2.6 | | -0.4 | -2.6 |
| Other cash from investing | | 0.9 | 0.6 | 4.2 | 1.7 | 8.3 | 3.6 | 0.9 |
| Cash from investing | 0.0 | -29.8 | -12.5 | -2.4 | -7.8 | -1.3 | -3.3 | -6.0 |
| |
| Cash dividends paid | | -1.7 | -1.7 | -1.7 | -1.7 | -1.9 | -1.8 | -1.8 |
| Repurchase of common stock, net | | | | -11.0 | -25.7 | -78.3 | -50.2 | -11.6 |
| Option exercises | | 0.3 | 0.4 | 0.4 | 0.7 | 0.5 | 0.6 | 0.9 |
| Financing costs | | 0.3 | | -0.3 | | 2.1 | -0.1 | -1.9 |
| Other cash from financing | | 21.5 | -5.6 | 1.0 | 19.7 | 69.6 | 27.1 | 4.8 |
| Cash from financing | 0.0 | 19.2 | -7.6 | -11.8 | -8.3 | -13.2 | -25.4 | -7.5 |
| |
| Free cash flow | 8.5 | 5.2 | 13.0 | 7.8 | 8.9 | 4.9 | 21.8 | 10.2 |
| Per share (diluted) | $0.55 | $0.33 | $0.84 | $0.50 | $0.54 | $0.27 | $1.19 | $0.55 |