| 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-Q | 8-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Revenue: | | | | | | | | |
| Subscription and other revenue | 106.1 | 99.8 | 95.8 | 91.6 | 90.9 | 89.5 | 88.4 | 85.3 |
| Subscription and other revenue growth | 15.8% | 9.9% | 7.0% | 7.4% | 9.2% | 12.0% | 15.9% | 16.2% |
| Cost of revenue: | | | | | | | | |
| Cost of revenue | 16.6 | 15.8 | 14.6 | 13.6 | 13.3 | 12.3 | 11.3 | 11.8 |
| Amortization of acquired technologies | 0.5 | 0.5 | | 0.5 | 1.0 | 8.7 | 1.0 | 1.0 |
| Total cost of revenue | 17.0 | 16.2 | | 14.2 | 14.3 | 13.3 | 12.3 | 12.8 |
| Gross profit | 89.1 | 83.6 | 80.7 | 77.5 | 76.6 | 76.2 | 76.1 | 72.5 |
| Gross margin | 84.0% | 83.8% | 84.3% | 84.5% | 84.3% | 85.1% | 86.1% | 85.0% |
| |
| Operating expenses: | | | | | | | | |
| Sales and marketing | 34.9 | 32.6 | 31.1 | 32.0 | 31.1 | 32.3 | 30.2 | 24.5 |
| Research and development | 20.2 | 18.8 | 16.8 | 15.2 | 15.4 | 14.8 | 14.6 | 12.5 |
| General and administrative | 18.1 | 17.3 | 17.0 | 18.4 | 17.6 | 19.1 | 19.9 | 21.4 |
| Amortization of acquired intangibles | 0.5 | 0.5 | | 0.5 | 1.0 | 8.7 | 1.0 | 1.0 |
| Total operating expenses | 73.2 | 69.3 | 66.4 | 67.2 | 65.5 | 67.7 | 66.4 | 62.6 |
| Operating income | 15.8 | 14.3 | 14.3 | 10.3 | 11.1 | 8.5 | 9.8 | 9.9 |
| Operating margin | 14.9% | 14.4% | 14.9% | 11.2% | 12.2% | 9.5% | 11.1% | 11.6% |
| |
| Other expense: | | | | | | | | |
| Interest expense, net | -7.5 | -7.2 | -6.4 | -3.8 | -3.5 | -4.8 | -3.1 | -6.1 |
| Other income, net | 1.0 | 1.0 | 2.4 | 0.2 | 1.1 | 0.2 | -0.9 | -0.1 |
| Total other expense | -6.5 | -6.2 | 2.4 | -3.7 | -2.5 | -4.6 | -4.0 | -6.1 |
| Income before income taxes | 9.3 | 8.1 | | 6.6 | 8.6 | 3.9 | 5.8 | 3.7 |
| Income tax expense | 4.8 | 4.6 | 3.4 | 2.3 | 3.5 | 1.9 | 3.9 | 3.3 |
| Net income | 4.5 | 3.5 | | 4.3 | 5.1 | 2.1 | 1.9 | 0.5 |
| |
| Net income per share: | | | | | | | | |
| Basic earnings per share (in dollars per share) | $0.02 | $0.02 | $0.04 | $0.02 | $0.03 | $0.01 | $0.01 | |
| Diluted earnings per share (in dollars per share) | $0.02 | $0.02 | $0.04 | $0.02 | $0.03 | $0.01 | $0.01 | |
| |
| Weighted-average shares used to compute net income per share: | | | | | | | | |
| Shares used in computation of basic earnings per share (in shares) | 182.2 | 181.4 | 180.7 | 180.0 | 179.5 | 167.5 | 174.5 | 158.1 |
| Shares used in computation of diluted earnings per share (in shares) | 185.6 | 183.2 | 182.2 | 180.5 | 180.2 | 168.7 | 175.8 | 158.1 |