| In millions, except per share items | Jun-30-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -21.7 | -13.7 | -23.2 | -23.7 | -34.1 | -3.6 | -20.5 | -16.5 |
| Depreciation and amortization | | 11.0 | 11.2 | 11.6 | 10.8 | 10.5 | 9.8 | 9.7 |
| Stock-based compensation | | 43.8 | 44.5 | 44.8 | 39.4 | 35.6 | 27.4 | 24.9 |
| Deferred taxes | | 1.0 | 0.0 | 0.2 | 1.9 | -6.9 | | |
| Change in working capital [+] | | 6.1 | 1.5 | -26.1 | 14.6 | 2.2 | -20.4 | 1.3 |
| Accounts receivable | | 0.4 | -5.6 | -5.3 | 5.6 | -23.8 | -6.7 | -2.0 |
| Other current assets | | 2.9 | 5.9 | -5.9 | -2.2 | -0.5 | -7.7 | -2.4 |
| Accounts payable | | -0.2 | -3.5 | -6.6 | 11.1 | -1.0 | 3.6 | 1.4 |
| Other | | 3.0 | 4.8 | -8.3 | 0.1 | 27.5 | -9.7 | 4.4 |
| Other operating activities | | -15.6 | -3.6 | -9.9 | -3.9 | -29.2 | -1.0 | -8.0 |
| Cash from operations | -21.7 | 32.7 | 30.5 | -3.1 | 28.7 | 8.6 | -4.8 | 11.4 |
| |
| Capital expenditures [+] | 0.0 | -7.7 | -12.6 | -22.9 | -13.0 | -13.7 | -9.0 | -11.2 |
| Purchases of property and equipment | | -6.2 | -11.6 | -22.1 | -12.4 | -13.7 | -9.0 | -11.2 |
| Capitalized product costs | | -1.5 | -1.0 | -0.8 | -0.6 | | | |
| Sales of short-term investments, net [+] | | 17.8 | 8.2 | 37.3 | 26.1 | 13.0 | -79.2 | 1.5 |
| Purchases of short-term investments | | -185.5 | -98.6 | -46.4 | -105.3 | -136.9 | -217.9 | -161.9 |
| Sales of short-term investments | | 203.3 | 106.7 | 83.8 | 131.4 | 149.9 | 138.7 | 163.4 |
| Other cash from investing | | 0.0 | -0.3 | | -2.0 | | | |
| Cash from investing | 0.0 | 10.1 | -4.7 | 14.4 | 11.2 | -0.7 | -88.2 | -9.8 |
| |
| Option exercises | | 8.2 | 2.4 | 10.1 | 1.3 | 8.6 | 1.6 | 10.4 |
| Other cash from financing | | 16.5 | 4.7 | -0.1 | -29.4 | 9.7 | 1.9 | 7.6 |
| Cash from financing | 0.0 | 8.2 | 2.3 | -10.2 | -30.6 | 1.0 | 0.3 | -2.7 |
| |
| Free cash flow | -21.7 | 26.5 | 19.0 | -25.2 | 16.3 | -5.1 | -13.8 | 0.1 |
| Per share (diluted) | ($0.30) | $0.35 | $0.26 | ($0.37) | $0.23 | ($0.07) | ($0.20) | $0.00 |
| |
| Cash paid for interest | | 1.9 | | 1.9 | | 2.2 | 0.0 | 1.9 |
| Cash paid for income taxes | | 0.1 | 0.3 | 0.3 | 0.3 | 0.0 | -0.1 | 0.1 |