| 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 | 14.6 | 1.5 | -8.1 | -0.4 | 0.0 | -4.5 | -1.8 | 0.4 |
| Depreciation and amortization [+] | 1.4 | 2.2 | 2.2 | 2.2 | 2.3 | 1.7 | 0.5 | 0.5 |
| Depreciation | 1.4 | 2.2 | 2.2 | 2.2 | 2.3 | 1.7 | 0.5 | 0.5 |
| Stock-based compensation | 1.0 | 0.3 | 0.5 | 0.6 | 0.7 | 0.5 | 0.7 | 0.3 |
| Deferred taxes | 2.7 | 0.0 | 0.2 | -0.6 | 0.2 | 1.4 | -0.4 | 0.3 |
| Change in working capital [+] | -7.4 | 1.8 | 3.0 | -1.1 | 0.3 | 0.8 | 1.3 | -0.5 |
| Accounts receivable | -3.1 | 0.2 | 1.2 | 2.5 | 0.2 | -1.5 | 0.4 | -0.4 |
| Inventories | -0.8 | -0.4 | -0.2 | -0.5 | -0.8 | 1.7 | -0.8 | 0.4 |
| Other current assets | -1.0 | 1.0 | 0.9 | 0.0 | -0.9 | -0.1 | -0.2 | 0.2 |
| Accounts payable | -0.2 | 0.8 | -0.8 | -1.1 | -0.7 | -0.2 | 1.9 | -0.1 |
| Accrued expenses | -2.1 | 0.9 | 1.1 | -2.0 | 2.4 | | | |
| Deferred revenues | -0.2 | -0.5 | 0.8 | | | | | |
| Other | 0.0 | 0.0 | 0.0 | 0.0 | | 0.8 | 0.1 | -0.6 |
| Other operating activities | -21.9 | -1.2 | 5.2 | -0.6 | 0.4 | 1.5 | | |
| Cash from operations | -9.7 | 4.6 | 3.0 | 0.1 | 4.0 | 1.4 | 0.6 | 1.0 |
| |
| Capital expenditures [+] | -0.7 | -0.5 | -0.4 | -0.4 | -0.9 | -0.9 | -0.8 | -0.5 |
| Purchases of property and equipment | -0.7 | -0.5 | -0.4 | -0.4 | -0.9 | -0.9 | -0.8 | -0.5 |
| Sales of property and equipment | | | | | | 0.0 | | |
| Acquisitions | -0.3 | -0.2 | -8.2 | -0.4 | -0.8 | -9.4 | | |
| Other cash from investing | 35.3 | | | | | | | |
| Cash from investing | 34.3 | -0.7 | -8.6 | -0.8 | -1.7 | -10.4 | -0.8 | -0.5 |
| |
| Repurchase of common stock, net | -2.5 | | | | | | -0.1 | -1.4 |
| Option exercises | 0.2 | 0.2 | 0.0 | | 0.3 | 0.4 | | 0.0 |
| Financing costs | | | -1.3 | -0.1 | | -0.2 | | |
| Other cash from financing | -5.5 | -4.0 | 5.0 | -0.3 | 0.8 | 2.2 | -0.1 | -0.1 |
| Cash from financing | -8.2 | -4.2 | 6.3 | -0.2 | 0.5 | 2.0 | -0.2 | -1.6 |
| |
| Free cash flow | -10.4 | 4.0 | 2.6 | -0.3 | 3.1 | 0.5 | -0.2 | 0.6 |
| Per share (diluted) | ($0.46) | $0.17 | $0.12 | ($0.01) | $0.15 | $0.02 | ($0.01) | $0.03 |
| |
| Cash paid for interest | 0.1 | 0.8 | 0.7 | 0.2 | 0.2 | 0.1 | | |
| Cash paid for income taxes | 1.0 | 0.2 | 0.1 | 0.1 | 0.0 | | | |