| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| Revenue: | | | | | | | | |
| Total revenue | 211.1 | 208.1 | 269.5 | 208.8 | 191.2 | 262.2 | 211.9 | 190.3 |
| Total revenue growth | 1.1% | 8.8% | 2.8% | 9.7% | -10.4% | 14.6% | 3.2% | 3.5% |
| Cost of revenue: | | | | | | | | |
| Total cost of revenue | 50.4 | 50.9 | 56.8 | 57.7 | 47.7 | 60.5 | 51.6 | 54.4 |
| Gross profit | 160.7 | 157.2 | 212.7 | 151.1 | 143.5 | 201.7 | 160.3 | 135.9 |
| Gross margin | 76.1% | 75.5% | 78.9% | 72.4% | 75.1% | 76.9% | 75.6% | 71.4% |
| |
| Operating expenses: | | | | | | | | |
| Research and development | 45.5 | 46.2 | 42.6 | 43.5 | 42.2 | 41.6 | 44.5 | 42.8 |
| Sales and marketing | 79.0 | 67.5 | 67.0 | 76.3 | 67.0 | 66.0 | 65.2 | 66.0 |
| General and administrative | 28.2 | 27.9 | 25.5 | 24.8 | 27.8 | 23.7 | 23.5 | 22.7 |
| Amortization of acquired intangible assets | 12.7 | 13.9 | 13.8 | 13.9 | 14.8 | 14.9 | 15.0 | 15.0 |
| Restructuring charges | | 0.0 | 0.1 | 1.8 | | | | |
| Total operating expenses | 165.4 | 155.5 | 149.0 | 160.2 | 151.8 | 146.3 | 148.1 | 146.5 |
| Loss from operations | -4.7 | 1.6 | 63.8 | -9.1 | -8.3 | 55.5 | 12.2 | -10.7 |
| Operating margin | -2.2% | 0.8% | 23.7% | -4.4% | -4.4% | 21.2% | 5.7% | -5.6% |
| |
| Interest and other expense, net: | | | | | | | | |
| Interest income | 2.3 | 2.4 | 1.5 | 0.3 | 0.1 | 0.0 | 0.0 | 0.1 |
| Interest expense | -2.1 | -3.2 | -2.9 | -1.9 | -1.7 | -1.7 | -2.4 | -2.2 |
| Other income (expense), net | -0.8 | -1.9 | -1.7 | 0.2 | 0.4 | 1.9 | 0.0 | -0.3 |
| Total interest and other expense, net | -1.5 | -2.7 | -3.2 | -1.4 | -1.2 | 2.1 | -2.3 | -2.4 |
| Loss before income tax benefit | -5.3 | -1.1 | 60.6 | -10.5 | -9.5 | 55.6 | 9.8 | -13.1 |
| Income tax benefit | -1.1 | 2.2 | 8.0 | -3.4 | -1.1 | 7.9 | 1.9 | -1.7 |
| Net loss | -4.2 | -3.2 | 52.6 | -7.1 | -8.4 | 47.7 | 7.9 | -11.3 |
| |
| Basic net loss per share (in dollars per share) | ($0.06) | ($0.04) | $0.73 | ($0.10) | ($0.12) | $0.65 | $0.11 | ($0.15) |
| Diluted net loss per share (in dollars per share) | ($0.06) | ($0.04) | $0.72 | ($0.10) | ($0.11) | $0.64 | $0.11 | ($0.15) |
| |
| Weighted average common shares outstanding used in computing: | | | | | | | | |
| Net loss per share - basic (in shares) | 71.5 | 71.8 | 71.7 | 72.5 | 74.0 | 73.9 | 74.4 | 73.9 |
| Net loss per share - diluted (in shares) | 71.5 | 73.0 | 73.0 | 72.5 | 75.1 | 74.9 | 75.1 | 73.9 |