| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net sales | 117.5 | 86.3 | 98.1 | 88.8 | 103.5 | 75.4 | 77.9 | 68.1 |
| Net sales growth | 13.5% | 14.4% | 26.0% | 30.3% | 55.7% | 58.6% | 105.6% | 97.2% |
| Cost of sales | 49.6 | 32.2 | 33.0 | 27.2 | 33.5 | 24.5 | 21.1 | 22.1 |
| Gross profit | 67.9 | 54.1 | 65.2 | 61.6 | 70.0 | 50.9 | 56.8 | 46.1 |
| Gross margin | 57.8% | 62.7% | 66.4% | 69.3% | 67.6% | 67.5% | 72.9% | 67.6% |
| |
| Operating expenses: | | | | | | | | |
| Selling and marketing | 43.0 | 38.7 | 39.0 | 39.8 | 44.9 | 36.4 | 37.1 | 30.5 |
| Research and development | 2.9 | 2.3 | 1.4 | 2.2 | 2.6 | 2.2 | 1.9 | 1.9 |
| General and administrative | 35.1 | 30.4 | 28.5 | 23.8 | 27.6 | 26.3 | 25.0 | 19.2 |
| Total operating expenses | 81.0 | 71.4 | 68.9 | 65.7 | 75.1 | 64.9 | 64.0 | 51.5 |
| Loss from operations | -13.1 | -17.3 | -3.8 | -4.1 | -5.0 | -14.0 | -7.2 | -5.5 |
| Operating margin | -11.2% | -20.1% | -3.8% | -4.7% | -4.9% | -18.6% | -9.3% | -8.0% |
| Interest expense, net | -3.4 | -3.4 | | | -3.2 | -3.4 | | |
| Interest income | -5.7 | -4.3 | | | -0.7 | 0.0 | | |
| Other (income) expense, net | 0.0 | -0.4 | 4.9 | -2.5 | -0.9 | 0.9 | 0.2 | 0.0 |
| Change in fair value of warrant liabilities | -11.6 | 9.1 | -6.8 | -4.3 | -15.2 | -52.1 | 6.0 | 199.3 |
| Foreign currency transaction (gain) loss, net | -0.4 | 0.9 | 1.4 | 0.0 | 2.2 | -0.4 | -0.6 | 0.4 |
| Income (loss) before provision for income taxes | 1.2 | -25.9 | 2.6 | -0.7 | 6.4 | 34.1 | -16.2 | -216.3 |
| Income tax (benefit) expense | -2.2 | -3.7 | -1.2 | -0.8 | 0.1 | 2.6 | 1.1 | -1.1 |
| Net income (loss) | 3.4 | -22.3 | 3.8 | 0.1 | 6.3 | 31.5 | -17.3 | -215.1 |
| |
| Comprehensive income (loss), net of tax: | | | | | | | | |
| Foreign currency translation adjustments | -0.4 | 0.9 | 2.2 | -1.6 | -3.7 | -0.1 | 0.3 | -1.5 |
| Comprehensive income (loss) | 3.0 | -21.4 | 6.0 | -1.5 | 2.6 | 31.3 | -17.0 | -216.7 |
| |
| Net income (loss) per share | | | | | | | | |
| Basic (in dollars per share) | $0.03 | ($0.17) | $0.03 | | $0.04 | $0.21 | $0.43 | ($1.63) |
| Diluted (in dollars per share) | $0.03 | ($0.17) | ($0.03) | ($0.03) | ($0.06) | ($0.13) | $0.43 | ($1.63) |
| |
| Weighted average common shares outstanding | | | | | | | | |
| Basic (in shares) | 132.7 | 132.4 | 147.6 | 150.8 | 150.7 | 150.6 | 102.1 | 132.3 |
| Diluted (in shares) | 132.7 | 132.4 | 148.5 | 151.4 | 151.7 | 152.7 | 102.1 | 132.3 |