| In millions, except per share items | Mar-31-13 | Dec-31-12 | Sep-30-12 | Jun-30-12 | Mar-31-12 | Dec-31-11 | Sep-30-11 | Jun-30-11 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | 5.9 | 10.9 | 14.9 | 16.4 | 16.4 | 12.0 | 0.8 | 2.0 |
| Depreciation and amortization | 4.5 | 4.8 | 4.8 | 4.6 | 4.4 | 4.2 | 4.2 | 4.4 |
| Stock-based compensation | 1.4 | 1.3 | 1.0 | 1.1 | 0.9 | 1.0 | 1.3 | 1.3 |
| Deferred taxes | 2.2 | 4.8 | 5.9 | 8.7 | 8.9 | 6.9 | 3.2 | -1.7 |
| Change in working capital [+] | 13.1 | 10.3 | 14.2 | 11.0 | 3.6 | 2.5 | 7.7 | -0.2 |
| Income taxes | -0.9 | -2.2 | -0.4 | 4.1 | -3.1 | | 5.4 | -1.9 |
| Other | 14.0 | 12.4 | 14.6 | 6.9 | 6.8 | 2.5 | 2.2 | 1.7 |
| Other operating activities | -10.2 | -16.7 | -23.9 | -31.2 | -14.2 | -7.2 | -1.1 | 7.0 |
| Cash from operations | 16.7 | 15.4 | 16.8 | 10.6 | 20.0 | 19.4 | 16.0 | 12.8 |
| |
| Capital expenditures [+] | -3.9 | -3.1 | -4.8 | -5.6 | -5.7 | -5.8 | -2.9 | -2.1 |
| Purchases of property and equipment | -3.9 | -3.1 | -4.8 | -5.6 | -5.7 | -5.8 | -2.9 | -1.3 |
| Sales of property and equipment | 0.7 | | 0.7 | 0.5 | 0.1 | | 0.1 | |
| Other cash from investing | -15.4 | -14.1 | 15.2 | -0.2 | 7.9 | -21.2 | -8.9 | -12.6 |
| Cash from investing | -18.6 | -16.5 | 11.1 | -5.4 | 2.3 | -26.9 | -11.7 | -14.7 |
| |
| Repurchase of common stock, net | -0.2 | -0.1 | | -0.1 | -0.1 | | -0.1 | -0.1 |
| Financing costs | | 0.0 | -5.5 | | -6.0 | -6.0 | -1.3 | -1.0 |
| Other cash from financing | 1.2 | 8.3 | -27.6 | -2.1 | -14.1 | 2.9 | -2.9 | 2.4 |
| Cash from financing | 0.9 | 8.1 | -22.2 | 3.5 | -8.2 | 8.8 | -1.8 | 3.3 |
| |
| Free cash flow | 12.8 | 12.2 | 12.0 | 5.0 | 14.3 | 13.6 | 13.1 | 11.5 |
| Per share (diluted) | $0.41 | $0.39 | $0.39 | $0.16 | $0.46 | $0.44 | $0.43 | $0.35 |
| |
| Cash paid for interest | 21.8 | | 22.3 | 16.0 | 13.6 | | 13.8 | 9.7 |
| Cash paid for income taxes | 0.0 | | -2.8 | -5.7 | -5.3 | -8.5 | -11.0 | -8.2 |