| 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/A | 10-Q | 10-Q | 10-K | 10-Q/A |
| Net income | -2.9 | -12.7 | 4.0 | -21.1 | -20.1 | -18.2 | -16.8 | -16.8 |
| Depreciation and amortization | 3.2 | 3.5 | 3.8 | 3.8 | 3.5 | 3.8 | 4.2 | 4.4 |
| Stock-based compensation | 14.6 | 12.1 | 12.7 | 13.5 | 14.3 | 12.8 | 11.5 | 12.3 |
| Change in working capital [+] | -3.8 | -2.5 | 4.3 | 3.1 | 0.0 | -11.8 | 37.8 | 3.3 |
| Accounts receivable | -0.2 | -0.5 | -0.5 | -0.6 | -0.2 | -0.9 | 0.2 | -0.3 |
| Other current assets | 1.3 | -0.2 | -3.7 | 0.9 | 0.5 | 7.1 | 2.7 | -13.0 |
| Accounts payable | -0.4 | -0.1 | 0.3 | -0.8 | 0.3 | 0.1 | 0.3 | -0.6 |
| Other | -4.5 | -1.6 | 8.2 | 3.6 | -0.5 | -18.0 | 34.6 | 17.2 |
| Other operating activities | -38.0 | 74.7 | -88.8 | 34.1 | -24.4 | 90.8 | -67.2 | -14.6 |
| Cash from operations | -27.0 | 75.2 | -63.9 | 33.4 | -26.7 | 77.5 | -30.4 | -11.4 |
| |
| Capital expenditures [+] | -1.9 | -1.8 | -0.9 | -1.8 | -0.9 | -0.8 | -0.9 | -0.8 |
| Purchases of property and equipment | -0.2 | -0.3 | -0.2 | -0.5 | -0.4 | -0.3 | -0.5 | -0.2 |
| Capitalized product costs | -1.7 | -1.5 | -0.7 | -1.2 | -0.5 | -0.5 | -0.4 | -0.6 |
| Acquisitions | | | | | -1.1 | | | |
| Purchases of short-term investments, net | 29.6 | -94.7 | -83.9 | | | | | |
| Purchases of short-term investments | -55.9 | -94.7 | -83.9 | | | | | |
| Sales of short-term investments | 85.5 | | | | | | | |
| Cash from investing | 27.7 | -96.4 | -84.8 | -1.8 | -2.1 | -0.8 | -0.9 | -0.8 |
| |
| Repurchase of common stock, net | 0.6 | | -0.8 | | 0.8 | | -0.7 | |
| Option exercises | 0.3 | 0.5 | 0.1 | 0.2 | 1.4 | 1.5 | 8.3 | 2.5 |
| Other cash from financing | -0.8 | -0.9 | 0.4 | -1.2 | 0.7 | 1.2 | 13.6 | 2.1 |
| Cash from financing | -0.5 | -1.4 | -0.5 | -1.4 | 0.1 | -0.3 | 4.5 | -0.4 |
| |
| Free cash flow | -27.2 | 74.9 | -64.0 | 32.9 | -27.1 | 77.1 | -30.9 | -11.6 |
| Per share (diluted) | ($0.29) | $0.74 | ($0.66) | $0.32 | ($0.28) | $0.79 | ($0.33) | ($0.13) |
| |
| Cash paid for interest | 3.8 | 0.8 | 3.8 | 0.8 | 3.8 | 0.9 | 3.9 | 0.8 |
| Cash paid for income taxes | 0.3 | 0.0 | 0.5 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 |