| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 9.3 | 1.4 | 3.3 | 5.1 | 10.7 | 14.5 | -2.5 | 2.2 |
| Depreciation and amortization | 5.4 | 4.6 | 3.0 | 2.5 | 1.2 | 2.5 | 3.7 | 2.5 |
| Stock-based compensation | 4.2 | 3.0 | 2.1 | 1.5 | 0.6 | 0.7 | 0.9 | 1.1 |
| Tax benefit from stock-based compensation | | | | -3.3 | | | | |
| Deferred taxes | -2.4 | -1.5 | -0.5 | | | | | |
| Change in working capital [+] | -13.4 | -1.5 | -5.7 | -2.6 | -7.7 | -1.5 | -2.7 | -2.0 |
| Accounts receivable | -9.2 | 0.1 | -3.3 | -2.2 | -6.2 | 1.2 | -3.6 | -2.0 |
| Inventories | -10.0 | 0.9 | -1.6 | -0.7 | -1.0 | -1.9 | 0.5 | -0.3 |
| Other current assets | -0.4 | 0.6 | -2.2 | -0.2 | | | | |
| Other | 6.1 | -3.1 | 1.4 | 0.6 | -0.5 | -0.7 | 0.4 | 0.3 |
| Other operating activities | -11.7 | -1.5 | 0.7 | 1.7 | -8.2 | -15.3 | 0.2 | -8.9 |
| Cash from operations | -8.6 | 4.5 | 2.9 | 4.8 | -3.3 | 0.9 | -0.4 | -5.1 |
| |
| Capital expenditures [+] | -2.9 | -1.4 | -0.7 | -0.5 | -0.4 | -1.4 | -1.5 | -0.7 |
| Purchases of property and equipment | -2.9 | -1.4 | -0.7 | -0.5 | -0.4 | -1.4 | -1.5 | -0.7 |
| Sales of property and equipment | | | 0.4 | | 0.0 | 0.0 | | |
| Purchases of intangible assets | -0.1 | -0.4 | -0.4 | -0.3 | -0.4 | -0.5 | -0.5 | -0.4 |
| Acquisitions | -22.1 | | -34.1 | -19.0 | -5.0 | | | |
| Other cash from investing | 14.0 | | 0.6 | | 15.8 | 28.0 | | |
| Cash from investing | -11.1 | -1.8 | -34.2 | -19.8 | 10.0 | 26.2 | -2.0 | 8.3 |
| |
| Cash dividends paid | | | | 0.3 | 0.3 | 0.1 | | |
| Repurchase of common stock, net | -0.4 | -0.5 | -0.5 | -2.2 | -0.5 | -1.1 | -0.3 | -0.2 |
| Other cash from financing | 9.9 | -0.8 | 22.1 | -0.5 | -1.0 | -1.9 | -1.9 | 0.3 |
| Cash from financing | 9.5 | -1.3 | 21.6 | -2.4 | -1.2 | -2.9 | -2.3 | 0.1 |
| |
| Free cash flow | -11.5 | 3.1 | 2.2 | 4.3 | -3.7 | -0.4 | -1.9 | -5.8 |
| Per share (diluted) | ($0.35) | $0.10 | $0.07 | $0.13 | ($0.11) | ($0.02) | ($0.07) | ($0.25) |
| |
| Cash paid for interest | 0.8 | 0.5 | 0.0 | 0.0 | 0.1 | 0.2 | 0.3 | 0.2 |
| Cash paid for income taxes | 0.0 | 0.1 | -1.2 | | | | | |