| 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 |
| Revenues | 59.6 | 54.6 | 53.3 | 51.1 | 47.9 | 48.6 | 41.0 | 40.7 |
| Revenue growth | 9.2% | 2.4% | 4.4% | 6.5% | -1.4% | 18.6% | 0.7% | 1.6% |
| Cost of goods sold | 14.5 | 12.2 | 11.1 | 10.7 | 10.0 | 9.2 | 8.4 | 8.4 |
| Gross profit | 45.0 | 42.4 | 42.2 | 40.3 | 37.9 | 39.4 | 32.6 | 32.3 |
| Gross margin | 75.6% | 77.6% | 79.1% | 79.0% | 79.1% | 81.0% | 79.6% | 79.3% |
| Selling, general and administrative [+] | 10.5 | 10.3 | 9.8 | 9.1 | 8.6 | 8.6 | 9.7 | 9.6 |
| Sales and marketing | | | | | | 0.5 | 0.5 | 0.5 |
| General and administrative [+] | 10.5 | 10.3 | 9.8 | 9.1 | 8.6 | 8.1 | 9.1 | 9.1 |
| Wages and related expenses | 0.6 | 0.6 | 0.6 | 0.6 | 0.5 | | | |
| General and administrative expenses | 9.9 | 9.8 | 9.3 | 8.5 | 8.1 | 8.1 | 9.1 | 9.1 |
| Other selling, general and administrative | | | | | | 0.5 | 0.5 | 0.5 |
| Other operating expenses | 10.0 | 8.6 | 7.9 | 7.5 | 6.8 | 7.0 | | |
| EBITDA [+] | 34.6 | 32.3 | 32.6 | 31.5 | 29.5 | 30.5 | 29.3 | 28.8 |
| EBITDA growth | 7.3% | -1.1% | 3.6% | 6.6% | -3.1% | 3.8% | 1.9% | 1.7% |
| EBITDA margin | 58.1% | 59.1% | 61.2% | 61.6% | 61.6% | 62.7% | 71.7% | 70.9% |
| Depreciation and amortization | 10.1 | 8.9 | 8.2 | 7.7 | 7.0 | 6.8 | 6.4 | 6.2 |
| EBIT [+] | 24.5 | 23.4 | 24.4 | 23.8 | 22.5 | 23.7 | 22.9 | 22.7 |
| EBIT growth | 4.6% | -4.2% | 2.7% | 5.6% | -5.0% | 3.4% | 1.2% | 1.2% |
| EBIT margin | 41.1% | 42.9% | 45.8% | 46.6% | 47.0% | 48.8% | 56.0% | 55.7% |
| Non-recurring items [+] | | | | | | | 0.0 | |
| Loss (gain) on sale of assets | | | | | | | 0.0 | |
| Interest expense | 5.1 | 4.9 | 4.7 | 5.1 | 5.5 | 5.3 | 5.3 | 5.2 |
| Interest expense | 5.1 | 4.9 | 4.7 | 5.1 | 5.5 | 5.3 | 5.3 | 5.2 |
| Other income (expense), net | 0.2 | -0.4 | -1.1 | -2.0 | -1.1 | -0.8 | -0.4 | -0.3 |
| Pre-tax income | 19.6 | 18.1 | 18.6 | 16.6 | 15.9 | 17.5 | 17.3 | 17.2 |
| Income taxes | 0.0 | 1.1 | 2.0 | 2.2 | 2.5 | 4.5 | 5.4 | 4.7 |
| Tax rate | 0.1% | 6.2% | 10.8% | 13.5% | 15.7% | 25.9% | 31.3% | 27.5% |
| Net income | 19.6 | 17.0 | 16.6 | 14.4 | 13.4 | 13.0 | 11.8 | 12.5 |
| Net margin | 32.9% | 31.1% | 31.1% | 28.2% | 27.9% | 26.7% | 28.9% | 30.7% |
| |
| Basic EPS [+] | $1.40 | $1.30 | $1.27 | $1.11 | $1.04 | $1.01 | $0.92 | $0.97 |
| Growth | 8.0% | 2.0% | 14.6% | 7.2% | 2.7% | 9.5% | -5.3% | 9.2% |
| Diluted EPS [+] | $1.40 | $1.30 | $1.27 | $1.11 | $1.04 | $1.01 | $0.92 | $0.97 |
| Growth | 8.0% | 2.0% | 14.6% | 7.2% | 2.7% | 9.5% | -5.3% | 9.2% |
| |
| Dividends per share [+] | $0.79 | $0.76 | $0.73 | $0.70 | $0.67 | $0.65 | $0.63 | $0.60 |
| Growth | 4.0% | 4.0% | 4.0% | 4.0% | 4.0% | 3.3% | 3.8% | 4.4% |
| |
| Shares outstanding (basic) [+] | 14.0 | 13.1 | 13.0 | 13.0 | 12.9 | 12.8 | 12.8 | 12.8 |
| Growth | 6.7% | 0.3% | 0.5% | 0.5% | 0.4% | 0.0% | 0.1% | -0.4% |
| Shares outstanding (diluted) [+] | 14.0 | 13.1 | 13.0 | 13.0 | 12.9 | 12.8 | 12.8 | 12.8 |
| Growth | 6.7% | 0.3% | 0.5% | 0.5% | 0.4% | 0.0% | 0.1% | -0.4% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |