| In millions, except per share items | Mar-31-18 | Mar-31-17 | Mar-31-16 | Mar-31-15 | Mar-31-14 | Mar-31-13 | Mar-31-12 | Mar-31-11 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K | S-1/A |
| Net income | -6.0 | -0.9 | -0.1 | -0.3 | -1.2 | -0.2 | 0.1 | 1.1 |
| Depreciation and amortization [+] | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.3 | |
| Amortization of intangible assets | 0.1 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | |
| Stock-based compensation | 0.5 | 0.4 | 0.4 | 0.4 | 0.1 | 1.1 | 1.0 | |
| Deferred taxes | | | -0.2 | | | 0.4 | -1.0 | |
| Change in working capital [+] | 13.5 | -3.9 | 0.5 | -0.6 | 0.5 | -1.2 | -1.0 | |
| Income taxes | 5.8 | | | | | -0.3 | -1.0 | |
| Other | 7.7 | -3.9 | 0.5 | -0.6 | | -1.0 | 0.0 | |
| Other operating activities | -6.5 | 4.6 | 0.5 | 0.6 | 2.5 | 1.6 | 2.6 | |
| Cash from operations | 1.7 | 0.5 | 1.4 | 0.3 | 2.2 | 2.0 | 2.1 | |
| |
| Capital expenditures [+] | -0.7 | -0.3 | -0.1 | -0.1 | -0.1 | -0.3 | -0.4 | |
| Purchases of property and equipment | -0.7 | -0.3 | -0.1 | -0.1 | -0.1 | -0.3 | -0.4 | |
| Sales of property and equipment | 0.8 | 0.4 | 0.5 | 0.0 | 0.2 | 0.0 | | |
| Acquisitions | | -10.5 | -12.7 | | | | | |
| Sales of short-term investments, net [+] | 25.5 | -13.9 | 33.0 | 12.5 | 6.9 | -21.0 | -39.7 | |
| Purchases of short-term investments | -1.2 | -50.6 | -8.0 | -23.2 | -27.6 | -88.0 | -57.2 | |
| Sales of short-term investments | 26.7 | 36.7 | 41.1 | 35.8 | 34.5 | 67.0 | 17.5 | |
| Other cash from investing | -51.2 | -10.6 | -8.0 | -16.1 | 14.0 | 6.4 | 51.4 | |
| Cash from investing | -25.7 | -34.8 | 12.7 | -3.7 | 21.0 | -14.9 | 11.3 | |
| |
| Issuance of common stock, net | | | | -2.5 | -2.8 | 32.6 | | |
| Other cash from financing | 18.0 | -3.8 | 36.7 | -10.6 | -21.4 | -21.0 | -17.5 | |
| Cash from financing | 18.0 | -3.8 | 36.7 | -13.1 | -24.1 | 11.6 | -17.5 | |
| |
| Free cash flow | 1.0 | 0.3 | 1.3 | 0.2 | 2.1 | 1.7 | 1.6 | |
| Per share (diluted) | $0.30 | $0.08 | $0.42 | $0.06 | $0.63 | $0.50 | | |
| |
| Cash paid for interest | -4.4 | -4.0 | -2.0 | -1.7 | -1.9 | -2.9 | -4.0 | |
| Cash paid for income taxes | 0.0 | -1.5 | | 0.6 | 1.3 | -0.8 | | |