| In millions, except per share items | Sep-30-19 | Sep-30-18 | Sep-30-17 | Sep-30-16 | Sep-30-15 | Sep-30-14 | Sep-30-13 | Sep-30-12 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 7.2 | 9.3 | -13.0 | 7.6 | 2.0 | 5.9 | 2.0 | 9.9 |
| Depreciation and amortization | 0.1 | 0.1 | 0.1 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Asset impairment charges | 0.2 | 0.3 | 1.1 | 0.2 | | 19.6 | 11.0 | 1.8 |
| Stock-based compensation | 0.0 | 0.1 | 0.1 | 0.7 | 1.4 | 1.7 | 2.0 | 1.6 |
| Deferred taxes | -0.3 | 1.2 | 2.6 | -2.0 | -5.3 | 0.4 | 0.1 | 3.3 |
| Change in working capital [+] | -0.8 | -2.7 | 0.8 | 1.6 | -0.5 | 0.7 | -0.4 | -0.2 |
| Accounts receivable | -0.1 | | | | | | | |
| Income taxes | 0.6 | | | | | | | |
| Other | -1.2 | -2.7 | 0.8 | 1.6 | -0.5 | 0.7 | -0.4 | -0.2 |
| Other operating activities | 4.9 | -4.3 | -3.6 | -17.7 | -19.1 | -30.9 | 1.5 | 0.8 |
| Cash from operations | 11.3 | 4.0 | -11.9 | -9.3 | -21.1 | -2.1 | 16.5 | 17.6 |
| |
| Capital expenditures | -0.1 | 0.0 | 0.0 | -0.2 | -0.1 | 0.0 | -0.7 | -0.6 |
| Purchases of property and equipment | -0.1 | 0.0 | 0.0 | -0.2 | -0.1 | 0.0 | -0.7 | -0.6 |
| Acquisitions | | | | | | -5.6 | | |
| Sales of short-term investments, net [+] | 108.4 | | 49.2 | 4.3 | 6.3 | -7.6 | -1.1 | -89.1 |
| Purchases of short-term investments | | | -13.2 | -12.0 | -17.8 | -20.1 | -34.2 | -111.7 |
| Sales of short-term investments | 108.4 | | 62.4 | 16.3 | 24.2 | 12.6 | 33.1 | 22.7 |
| Other cash from investing | -120.9 | 18.5 | 6.4 | -4.6 | -6.6 | 12.1 | 44.5 | 19.6 |
| Cash from investing | -12.6 | 18.5 | 55.6 | -0.5 | -0.3 | -1.0 | 42.7 | -70.1 |
| |
| Cash dividends paid | | -35.4 | | | | | -1.3 | -1.1 |
| Repurchase of common stock, net | -0.8 | | -54.2 | -11.2 | -1.8 | | -1.6 | -16.2 |
| Option exercises | | 0.4 | | 1.2 | 0.5 | 0.0 | 0.1 | 0.6 |
| Other cash from financing | | 2.2 | 11.5 | 18.2 | 19.3 | -3.2 | -26.0 | -9.0 |
| Cash from financing | -0.8 | -33.6 | -42.7 | 5.9 | 17.0 | -3.3 | -28.9 | -26.9 |
| |
| Free cash flow | 11.2 | 4.0 | -11.9 | -9.5 | -21.2 | -2.2 | 15.8 | 17.0 |
| Per share (diluted) | $1.68 | $0.60 | ($1.37) | ($0.76) | ($1.59) | ($0.16) | $1.19 | $1.18 |
| |
| Cash paid for interest | | 0.0 | 0.1 | | 2.4 | 1.0 | 1.8 | 2.6 |