| In millions, except per share items | Jun-30-20 | Mar-31-20 | Dec-31-19 | Sep-30-19 | Jun-30-19 | Mar-31-19 | Dec-31-18 | Sep-30-18 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | 2.2 | -59.0 | 9.3 | 8.7 | 4.3 | 5.7 | 13.9 | 9.6 |
| Depreciation and amortization [+] | -1.8 | 1.8 | 1.4 | 1.8 | -1.7 | 1.7 | 1.6 | 2.0 |
| Depreciation | -1.6 | 1.6 | 1.3 | 1.6 | -1.7 | 1.7 | 1.6 | 2.0 |
| Amortization of intangible assets | -0.1 | 0.1 | 0.1 | 0.2 | | | | |
| Asset impairment charges | 11.0 | | | | | | | |
| Stock-based compensation | -1.4 | 1.4 | 2.3 | 2.4 | -2.7 | 2.7 | 3.0 | 2.8 |
| Change in working capital [+] | 5.0 | -5.0 | 5.7 | -1.7 | -0.2 | 0.2 | 5.1 | -1.5 |
| Accounts payable | -0.5 | 0.5 | 3.1 | -2.1 | -0.9 | 0.9 | -1.4 | 1.6 |
| Accrued expenses | 6.2 | -6.2 | 3.0 | 0.4 | 1.0 | -1.0 | 6.2 | -2.6 |
| Other | -0.8 | 0.8 | -0.3 | -0.1 | -0.4 | 0.4 | 0.3 | -0.4 |
| Other operating activities | -72.3 | 118.2 | 57.0 | 59.0 | -68.6 | 58.6 | 59.6 | 50.9 |
| Cash from operations | -57.4 | 57.4 | 75.7 | 70.1 | -69.0 | 69.0 | 83.2 | 63.9 |
| |
| Capital expenditures [+] | 2.4 | -2.4 | -4.3 | -2.6 | 0.5 | -0.5 | -2.0 | -1.3 |
| Purchases of property and equipment | 2.4 | -2.4 | -0.1 | -1.7 | 0.5 | -0.5 | -0.4 | 0.0 |
| Capitalized product costs | | | -4.1 | -0.9 | | | -1.6 | -1.3 |
| Other cash from investing | 104.4 | -104.4 | -91.2 | -80.1 | 87.2 | -87.2 | -104.5 | -115.9 |
| Cash from investing | 106.8 | -106.8 | -95.4 | -82.8 | 87.7 | -87.7 | -106.5 | -117.2 |
| |
| Repurchase of common stock, net | 32.9 | -32.9 | -33.0 | -11.0 | | | | |
| Option exercises | 0.0 | 0.0 | 0.0 | 1.0 | -1.3 | 1.3 | 0.0 | 0.8 |
| Financing costs | 0.2 | -0.2 | -2.1 | -0.5 | 3.1 | -3.1 | -0.6 | -1.7 |
| Other cash from financing | -134.9 | 134.9 | 38.2 | 31.3 | -24.1 | 24.1 | 2.6 | 53.4 |
| Cash from financing | -102.2 | 102.2 | 7.3 | 19.8 | -25.9 | 25.9 | 3.1 | 54.3 |
| |
| Free cash flow | -55.0 | 55.0 | 75.6 | 68.4 | -68.4 | 68.4 | 82.8 | 63.9 |
| Per share (diluted) | ($0.92) | $0.88 | $0.93 | $0.87 | ($0.87) | $0.87 | $1.03 | $0.79 |
| |
| Cash paid for interest | -9.6 | 9.6 | 9.8 | 10.2 | -9.9 | 9.9 | 20.8 | |
| Cash paid for income taxes | 0.0 | 0.0 | | | | | | |