| In millions, except per share items | Dec-31-22 | Mar-26-22 | Dec-31-21 | Mar-27-21 | Mar-28-20 | Mar-30-19 | Mar-31-18 | Mar-25-17 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Total revenues | 30.3 | 9.0 | 25.6 | 13.1 | 11.8 | 11.1 | 9.8 | 16.3 |
| Revenue growth | 18.3% | -30.8% | | 10.9% | 5.6% | 13.8% | -39.8% | 11.4% |
| Cost of goods sold | 21.8 | 5.8 | 17.2 | 8.1 | 7.2 | 6.4 | 7.1 | 11.7 |
| Gross profit | 8.5 | 3.3 | 8.3 | 4.9 | 4.6 | 4.7 | 2.7 | 4.6 |
| Gross margin | 28.0% | 36.1% | 32.6% | 37.9% | 39.0% | 42.4% | 27.9% | 28.0% |
| Selling, general and administrative [+] | 12.3 | 4.1 | 9.8 | 3.9 | 3.5 | 3.7 | 4.1 | 4.6 |
| Sales and marketing | 1.7 | | 1.1 | | | | | |
| General and administrative | 10.5 | | 8.7 | | | | | |
| Research and development | 2.1 | 1.2 | 1.5 | 2.2 | 1.6 | 1.3 | 1.8 | 2.3 |
| Other operating expenses | | | | | | | 0.3 | 0.8 |
| EBITDA [+] | -4.9 | -1.8 | -2.1 | -0.8 | -0.1 | 0.0 | -2.3 | -2.3 |
| EBITDA growth | 133.7% | 114.3% | | 605.1% | 391.7% | -99.0% | 1.0% | -31.5% |
| EBITDA margin | -16.3% | -19.8% | -8.3% | -6.4% | -1.0% | -0.2% | -23.9% | -14.3% |
| Depreciation | 0.7 | 0.2 | 0.5 | 0.3 | 0.3 | 0.3 | 1.1 | 0.8 |
| EBITA | -5.6 | -2.0 | -2.6 | -1.1 | -0.4 | -0.3 | -3.5 | -3.1 |
| EBITA margin | -18.5% | -22.0% | -10.2% | -8.3% | -3.7% | -2.6% | -35.3% | -19.3% |
| Amortization of intangibles | 0.3 | | 0.4 | | | | | |
| EBIT [+] | -5.9 | -2.0 | -3.0 | -1.1 | -0.4 | -0.3 | -3.5 | -3.1 |
| EBIT growth | 97.8% | 82.9% | | 150.6% | 50.3% | -91.7% | 9.9% | -15.1% |
| EBIT margin | -19.6% | -22.0% | -11.7% | -8.3% | -3.7% | -2.6% | -35.3% | -19.3% |
| Non-recurring items [+] | 10.5 | 0.6 | | | | | -0.3 | -0.8 |
| Asset impairment | 10.5 | | | | | | | |
| Loss (gain) on sale of assets | | | | | | | -0.3 | -0.8 |
| Interest expense | | | | | | | 0.5 | 0.1 |
| Interest expense | | | | | | | 0.5 | 0.1 |
| Other income (expense), net [+] | -2.2 | -0.1 | 0.3 | 0.7 | -0.3 | -0.6 | 0.5 | 0.9 |
| Amortization of debt discount premium | | | | | | | | 0.0 |
| Gain (loss) on debt retirement | | | 0.4 | | | | | |
| Gain (loss) on foreign currency transactions | 0.0 | | | | | | | |
| Change in fair value of warrants | | | | | | | 0.2 | 0.1 |
| Other | 0.1 | | 0.1 | | | | | 0.0 |
| Pre-tax income | -18.5 | -2.7 | -2.7 | -0.4 | -0.7 | -0.9 | -3.1 | -1.5 |
| Income taxes | -0.1 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Tax rate | 0.7% | | | | | | | |
| Minority interest | -0.7 | | 0.2 | | | | | |
| Net income | -17.7 | -2.8 | -3.1 | -0.4 | -2.0 | -1.0 | -3.7 | -1.5 |
| Net margin | -58.6% | -30.7% | -12.1% | -3.1% | -17.2% | -9.4% | -37.3% | -9.5% |
| |
| Basic EPS [+] | ($3.19) | ($1.00) | ($1.06) | ($0.15) | ($1.64) | ($1.45) | ($0.38) | ($0.16) |
| Growth | 200.4% | 547.9% | | -90.6% | 13.2% | 286.7% | 132.0% | -72.6% |
| Diluted EPS [+] | ($3.19) | ($1.00) | ($1.06) | ($0.15) | ($1.64) | ($1.45) | ($0.38) | ($0.16) |
| Growth | 200.4% | 547.9% | | -90.6% | 13.2% | 286.7% | 132.0% | -72.6% |
| |
| Shares outstanding (basic) [+] | 5.6 | 2.8 | 2.9 | 2.6 | 1.2 | 0.7 | 9.7 | 9.6 |
| Growth | 90.1% | 5.0% | | 114.0% | 71.6% | -92.6% | 2.0% | 37.6% |
| Shares outstanding (diluted) [+] | 5.6 | 2.8 | 2.9 | 2.6 | 1.2 | 0.7 | 9.7 | 9.6 |
| Growth | 90.1% | 5.0% | | 114.0% | 71.6% | -92.6% | 2.0% | 37.6% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |