| In millions, except per share items | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Revenue: | | | | | | | | |
| Total revenue | 72.0 | 84.7 | 75.4 | 76.2 | 78.9 | 68.9 | 63.3 | 59.9 |
| Total revenue growth | -8.7% | 22.8% | 19.2% | 27.1% | 33.8% | 12.3% | -7.3% | -3.0% |
| Cost of revenue: | | | | | | | | |
| Cost of revenue (exclusive of amortization shown below) | | | | | | | | |
| Amortization expense | 8.7 | 8.5 | 8.3 | 6.8 | 6.1 | 5.8 | 5.5 | 5.2 |
| Total cost of revenue | 29.8 | 28.7 | 27.2 | 24.5 | 22.4 | 20.8 | 18.5 | 17.4 |
| Gross profit | 42.2 | 56.0 | 48.2 | 51.7 | 56.5 | 48.1 | 44.8 | 42.6 |
| Gross margin | 58.6% | 66.2% | 64.0% | 67.9% | 71.6% | 69.8% | 70.8% | 71.1% |
| |
| Operating expenses: | | | | | | | | |
| Sales and marketing | 36.7 | 30.9 | 32.4 | 30.4 | 29.1 | 25.5 | 24.8 | 21.2 |
| Research and development | 22.1 | 20.5 | 19.6 | 18.5 | 18.7 | 21.7 | 13.1 | 12.2 |
| General and administrative | 19.9 | 16.2 | 20.3 | 17.3 | 19.5 | 14.5 | 13.0 | 10.6 |
| Depreciation and amortization | 4.4 | 4.4 | 4.4 | 4.3 | 4.3 | 4.4 | 4.3 | 4.2 |
| Total operating expenses | 83.1 | 72.0 | 75.4 | 70.5 | 71.6 | 66.1 | 55.2 | 48.2 |
| Loss from operations | -40.9 | -16.0 | -27.2 | -18.8 | -15.1 | -17.9 | -10.4 | -5.7 |
| Operating margin | -56.8% | -18.9% | -36.0% | -24.7% | -19.2% | -26.0% | -16.4% | -9.4% |
| |
| Other income (expense): | | | | | | | | |
| Interest expense | -3.9 | -3.6 | -1.8 | -0.5 | -0.3 | -0.4 | -0.6 | -0.6 |
| Other income (expense), net | -2.9 | -0.8 | 0.1 | -0.8 | 0.4 | -0.9 | 2.2 | 1.3 |
| Total other income (expense) | -6.7 | -4.4 | -1.9 | -1.3 | 0.1 | -1.3 | 1.6 | 0.7 |
| Loss before income taxes | -47.7 | -20.4 | -29.0 | -20.1 | -15.0 | -19.2 | -8.7 | -5.0 |
| Benefit (provision) for income taxes | -0.2 | 0.2 | 3.0 | 8.6 | 4.0 | 3.3 | 5.3 | 4.1 |
| Net loss | -47.8 | -20.3 | -26.0 | -11.5 | -11.0 | -15.9 | -3.4 | -0.9 |
| |
| Net loss per share: | | | | | | | | |
| Basic (in dollars per share) | ($0.56) | ($0.24) | ($0.31) | ($0.14) | ($0.13) | ($0.20) | ($0.04) | ($0.01) |
| Diluted (in dollars per share) | ($0.56) | ($0.24) | ($0.31) | ($0.14) | ($0.13) | ($0.20) | ($0.04) | ($0.01) |
| |
| Weighted-average shares used in computing net loss per share: | | | | | | | | |
| Basic (in shares) | 85.3 | 83.8 | 82.3 | 82.2 | 82.0 | 81.3 | 80.4 | 80.7 |
| Diluted (in shares) | 85.3 | 83.8 | 82.3 | 82.2 | 82.0 | 81.3 | 80.4 | 80.7 |