| 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/A | 10-K/A | 10-K | 10-K |
| Revenues: |
| Energy Chemistry Technologies | | | | | 177.8 | 243.1 | | 213.6 |
| Other | | | | | | | | 56.4 |
| Total revenues [+] | 136.1 | 43.3 | 53.1 | 119.4 | 177.8 | 243.1 | 188.2 | 270.0 |
| Services | | | | | | | | 11.0 |
| Revenue growth [+] | 214.5% | -18.6% | -55.5% | -32.9% | -26.9% | 29.2% | -30.3% | -15.6% |
| Energy Chemistry Technologies | | | | | -26.9% | | | -20.5% |
| Cost of goods sold [+] | 228.7 | 43.4 | 81.8 | 148.1 | 161.9 | 189.0 | 144.0 | 172.0 |
| Cost of product sales | | | | | | | | 164.8 |
| Gross profit | -92.6 | -0.1 | -28.7 | -28.7 | 15.8 | 54.1 | 44.3 | 97.9 |
| Gross margin | -68.1% | -0.3% | -54.0% | -24.1% | 8.9% | 22.2% | 23.5% | 36.3% |
| Selling, general and administrative | 27.1 | 20.2 | 22.8 | 28.0 | 31.5 | 41.5 | 43.7 | 15.4 |
| Research and development | 4.4 | 5.5 | 7.2 | 8.9 | 10.4 | 13.1 | 9.3 | 6.7 |
| Other operating expenses | -83.7 | -3.3 | 67.3 | | | | -12.7 | 54.9 |
| EBITDA [+] | -40.5 | -22.5 | -125.9 | -65.6 | -26.0 | -0.6 | 3.9 | 21.0 |
| EBITDA growth | 79.8% | -82.1% | 92.0% | 152.3% | 4609.2% | -114.0% | -81.3% | -68.3% |
| EBITDA margin | -29.8% | -52.1% | -236.9% | -55.0% | -14.6% | -0.2% | 2.1% | 7.8% |
| Depreciation | 0.7 | 1.0 | 2.5 | 6.5 | 7.8 | 8.3 | 6.7 | 5.7 |
| EBITA | -41.3 | -23.6 | -128.4 | -72.1 | -33.8 | -8.8 | -2.7 | 15.3 |
| EBITA margin | -30.3% | -54.4% | -241.7% | -60.4% | -19.0% | -3.6% | -1.5% | 5.7% |
| Amortization of intangibles | | | 0.9 | 2.0 | 1.4 | 1.5 | 1.5 | 3.0 |
| EBIT [+] | -41.3 | -23.6 | -129.3 | -74.1 | -35.2 | -10.3 | -4.2 | 12.3 |
| EBIT growth | 75.2% | -81.8% | 74.6% | 110.3% | 241.2% | 143.5% | -134.5% | -79.1% |
| EBIT margin | -30.3% | -54.4% | -243.4% | -62.0% | -19.8% | -4.2% | -2.3% | 4.5% |
| Non-recurring items [+] | -5.8 | 7.9 | 14.3 | 1.5 | 34.6 | | 12.7 | |
| Asset impairment | | 8.1 | 11.7 | | 34.6 | | | |
| Loss (gain) on sale of assets | -2.9 | -0.1 | -0.1 | 1.5 | | | | |
| Interest expense | 7.1 | 0.1 | 0.1 | 2.0 | 2.9 | 2.2 | 2.0 | 1.5 |
| Interest expense | 7.1 | 0.1 | 0.1 | 2.0 | 2.9 | 2.2 | 2.0 | 1.5 |
| Other income (expense), net [+] | 0.1 | 1.0 | 1.1 | 1.7 | -8.0 | 1.1 | 12.3 | -0.1 |
| Gain (loss) on sale of assets | | | | | -0.4 | 0.3 | 0.0 | 0.0 |
| Gain (loss) on debt retirement | | 0.9 | | | | | | |
| Other | 0.1 | 0.1 | 1.1 | 1.7 | -5.0 | 1.1 | -0.4 | -0.1 |
| Pre-tax income | -42.3 | -30.6 | -142.6 | -75.8 | -80.7 | -11.4 | -6.7 | 10.6 |
| Income taxes | 0.0 | 0.0 | -6.2 | 0.3 | -7.2 | 6.1 | -2.2 | 3.5 |
| Tax rate | 0.1% | 0.1% | 4.3% | | 8.9% | | 33.1% | 32.7% |
| Minority interest | | | | | -0.4 | | | |
| Earnings from continuing ops | -42.3 | -30.5 | -136.5 | -76.1 | -146.5 | -17.5 | -4.4 | 7.2 |
| Earnings from discontinued ops | | | | | 2.7 | -9.9 | -44.7 | |
| Net income | -42.3 | -30.5 | -136.5 | -33.9 | -143.8 | -27.4 | -49.1 | -13.5 |
| Net margin | -31.1% | -70.6% | -256.8% | -28.4% | -80.9% | -11.3% | -26.1% | -5.0% |
| |
| Basic EPS [+] | ($0.57) | ($0.42) | ($2.00) | ($1.29) | ($2.53) | ($0.30) | ($0.08) | $0.13 |
| Growth | 36.6% | -79.2% | 54.3% | -48.7% | 731.1% | 283.4% | -160.3% | -81.9% |
| Diluted EPS [+] | ($0.57) | ($0.42) | ($2.00) | ($1.29) | ($2.53) | ($0.30) | ($0.08) | $0.13 |
| Growth | 36.6% | -79.2% | 54.3% | -48.7% | 731.1% | 283.4% | -160.9% | -81.8% |
| |
| Shares outstanding (basic) [+] | 74.4 | 73.4 | 68.3 | 58.8 | 58.0 | 57.6 | 56.1 | 54.5 |
| Growth | 1.5% | 7.4% | 16.3% | 1.3% | 0.7% | 2.7% | 3.0% | -0.1% |
| Shares outstanding (diluted) [+] | 74.4 | 73.4 | 68.3 | 58.8 | 58.0 | 57.6 | 56.1 | 55.0 |
| Growth | 1.5% | 7.4% | 16.3% | 1.3% | 0.7% | 2.7% | 2.0% | -1.0% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |