| 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 | 53.0 | 49.6 | 41.6 | 33.8 | 38.1 | 37.8 | 42.5 | 45.9 |
| Revenue growth | 6.9% | 19.2% | 23.0% | -11.2% | 0.8% | -11.0% | -7.6% | 5.8% |
| Cost of goods sold [+] | 40.9 | 36.0 | 28.8 | 25.9 | 27.4 | 30.9 | 37.1 | 39.4 |
| Cost of product sales | | | | | | | 33.2 | 34.3 |
| Transportation costs | | | | | | | 3.9 | 5.1 |
| Gross profit | 12.1 | 13.6 | 12.8 | 7.9 | 10.7 | 6.9 | 5.3 | 6.5 |
| Gross margin | 22.8% | 27.4% | 30.7% | 23.3% | 28.0% | 18.2% | 12.6% | 14.2% |
| Selling, general and administrative [+] | 14.8 | 17.6 | 14.5 | 16.7 | 13.3 | 8.8 | 7.7 | 9.2 |
| Sales and marketing | 7.3 | 9.7 | 7.5 | 9.2 | 4.9 | 3.0 | 3.7 | 4.9 |
| General and administrative | 7.5 | 8.0 | 7.0 | 7.6 | 8.4 | 5.8 | 4.0 | 4.4 |
| Other operating expenses | 12.1 | 11.9 | 6.9 | 6.0 | 5.3 | 9.9 | | |
| EBITDA [+] | -14.7 | -15.8 | -8.5 | -14.8 | -7.8 | -11.2 | -1.9 | -1.8 |
| EBITDA growth | -7.0% | 85.6% | -42.4% | 89.9% | -30.4% | 480.8% | 7.3% | -274.3% |
| EBITDA margin | -27.8% | -31.9% | -20.5% | -43.7% | -20.4% | -29.6% | -4.5% | -3.9% |
| Depreciation | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.6 | 0.4 | 0.9 |
| EBITA | -14.8 | -16.0 | -8.6 | -14.9 | -7.9 | -11.7 | -2.3 | -2.7 |
| EBITA margin | -28.0% | -32.2% | -20.7% | -43.9% | -20.7% | -31.1% | -5.5% | -5.9% |
| Amortization of intangibles | | | | | 0.0 | | | |
| EBIT [+] | -14.8 | -16.0 | -8.6 | -14.9 | -7.9 | -11.7 | -2.3 | -2.7 |
| EBIT growth | -7.1% | 85.4% | -42.0% | 88.1% | -32.8% | 407.5% | -15.2% | -1089.1% |
| EBIT margin | -28.0% | -32.2% | -20.7% | -43.9% | -20.7% | -31.1% | -5.5% | -5.9% |
| Non-recurring items [+] | | | | | 0.2 | | 0.5 | |
| Asset impairment | | | | | 0.2 | | 0.5 | |
| Loss (gain) on sale of assets | | | | | 0.0 | | | |
| Interest expense | 5.2 | 1.2 | 1.3 | 1.3 | 2.2 | 3.5 | 2.0 | 1.2 |
| Interest expense | 5.2 | 1.2 | 1.3 | 1.3 | 2.2 | 3.5 | 2.0 | 1.2 |
| Other income (expense), net [+] | | 0.8 | -0.3 | 0.0 | 0.0 | -3.1 | -0.2 | |
| Gain (loss) on debt retirement | | 0.8 | -0.3 | | | | | |
| Change in fair value of warrants | | | 0.0 | 0.0 | 0.0 | 3.3 | -0.2 | |
| Pre-tax income | -20.1 | -16.4 | -10.2 | -16.1 | -10.3 | -18.4 | -5.0 | -4.0 |
| Income taxes | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Tax rate | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
| Net income | -20.1 | -16.4 | -10.2 | -16.1 | -10.3 | -18.4 | -5.0 | -4.0 |
| Net margin | -37.8% | -33.1% | -24.5% | -47.7% | -27.1% | -48.6% | -11.8% | -8.6% |
| |
| Basic EPS [+] | ($9.07) | ($8.99) | ($0.17) | ($0.46) | ($0.41) | ($1.24) | ($0.37) | ($0.30) |
| Growth | 0.9% | 5255.5% | -63.5% | 12.9% | -67.2% | 237.9% | 22.0% | 418.4% |
| Diluted EPS [+] | ($9.07) | ($8.99) | ($0.17) | ($0.46) | ($0.41) | ($1.24) | ($0.37) | ($0.30) |
| Growth | 0.9% | 5255.5% | -63.5% | 12.9% | -67.2% | 237.9% | 22.0% | 418.4% |
| |
| Shares outstanding (basic) [+] | 2.2 | 1.8 | 60.6 | 35.1 | 25.4 | 14.8 | 13.6 | 13.1 |
| Growth | 21.2% | -97.0% | 73.0% | 38.3% | 71.6% | 8.5% | 3.6% | 0.8% |
| Shares outstanding (diluted) [+] | 2.2 | 1.8 | 60.6 | 35.1 | 25.4 | 14.8 | 13.6 | 13.1 |
| Growth | 21.2% | -97.0% | 73.0% | 38.3% | 71.6% | 8.5% | 3.6% | 0.8% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |