| In millions, except per share items | Jun-30-23 | Mar-31-23 | Jun-30-22 | Mar-31-22 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | 5.7 | 6.6 | 3.9 | 12.4 | 5.5 | 8.4 | 9.3 | 2.9 |
| Depreciation and amortization | 0.5 | 0.5 | 0.9 | 0.9 | | | | |
| Stock-based compensation | 1.3 | 0.8 | 0.9 | 0.7 | 0.6 | 0.4 | 0.5 | |
| Change in working capital [+] | -3.9 | 3.4 | -0.8 | 2.6 | 3.4 | -0.9 | -13.0 | -4.4 |
| Accounts receivable | -0.7 | 0.3 | 0.6 | -1.3 | 1.9 | -2.6 | -0.7 | |
| Other | -3.2 | 3.1 | -1.5 | 3.9 | 1.5 | 1.7 | -12.2 | -4.4 |
| Other operating activities | 4.0 | 3.7 | 8.1 | 21.1 | 4.3 | 1.3 | 15.0 | 10.7 |
| Cash from operations | 7.5 | 15.0 | 13.0 | 37.7 | 13.8 | 9.1 | 11.9 | 9.1 |
| |
| Capital expenditures | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Purchases of short-term investments, net | | | | | 3.9 | | -40.2 | |
| Purchases of short-term investments | | | | | | | -40.2 | |
| Sales of short-term investments | | | | | 3.9 | | | |
| Other cash from investing | 364.6 | 66.7 | 498.2 | 73.4 | -30.3 | 71.4 | 82.1 | -88.7 |
| Cash from investing | 364.6 | 66.7 | 498.2 | 73.4 | -26.3 | 71.4 | 41.9 | -88.7 |
| |
| Cash dividends paid | -11.8 | -11.8 | -7.5 | -7.2 | -3.1 | -2.4 | -2.0 | -2.1 |
| Issuance of common stock, net | | | | 113.5 | | | -3.1 | -92.3 |
| Other cash from financing | -379.1 | -49.9 | -484.9 | -208.5 | 30.8 | -96.1 | -33.1 | 191.0 |
| Cash from financing | -390.9 | -61.7 | -492.3 | -102.1 | 27.8 | -98.5 | -38.2 | 96.6 |
| |
| Free cash flow | 7.5 | 15.0 | 13.0 | 37.7 | 13.8 | 9.1 | 11.9 | 9.1 |
| Per share (diluted) | $0.33 | $0.66 | $0.58 | $1.71 | $0.70 | $0.47 | $0.64 | $1.64 |
| |
| Cash paid for interest | 16.7 | 9.8 | 12.1 | 4.9 | 5.6 | 7.3 | 6.7 | 6.9 |