| In millions, except per share items | Jun-30-17 | Mar-31-17 | Dec-31-16 | Sep-30-16 | Jun-30-16 | Mar-31-16 | Dec-31-15 | Sep-30-15 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | 18.7 | 19.9 | 20.8 | 14.0 | 17.9 | 14.0 | 14.8 | 16.5 |
| Depreciation and amortization | 9.8 | 9.7 | 9.8 | 10.6 | 9.6 | 9.3 | 9.6 | 13.3 |
| Stock-based compensation | 3.1 | 0.6 | 0.6 | 0.7 | 0.8 | 0.5 | 0.5 | 0.6 |
| Deferred taxes | -1.0 | 0.5 | 0.6 | | | | | |
| Change in working capital [+] | -1.7 | 9.7 | 0.3 | 12.0 | 7.0 | 3.0 | 1.4 | -4.2 |
| Accounts receivable | 10.0 | 2.9 | -7.7 | 5.2 | -1.9 | -5.9 | 6.3 | 8.6 |
| Inventories | 0.0 | 0.0 | 1.0 | 1.0 | 0.4 | 2.7 | 2.2 | -1.3 |
| Other | -11.8 | 6.8 | 7.0 | 5.9 | 8.5 | 6.2 | -7.2 | -11.5 |
| Other operating activities | -0.6 | 2.9 | -4.7 | -4.6 | -6.3 | -7.9 | -7.2 | -20.8 |
| Cash from operations | 28.3 | 43.3 | 27.5 | 32.7 | 29.0 | 19.0 | 19.1 | 5.3 |
| |
| Capital expenditures [+] | -8.8 | -5.5 | -5.7 | -8.5 | -7.7 | -8.4 | -13.9 | -12.2 |
| Purchases of property and equipment | -8.8 | -5.5 | -5.7 | -8.5 | -7.7 | -8.4 | -13.9 | -12.2 |
| Sales of property and equipment | 14.4 | 0.4 | 4.3 | 0.0 | 0.9 | 0.1 | 0.1 | 0.2 |
| Acquisitions | | | 390.0 | -195.0 | | | 170.0 | |
| Other cash from investing | -14.3 | | -390.0 | 195.0 | | | -170.0 | |
| Cash from investing | -8.8 | -5.1 | -1.4 | -8.5 | -6.9 | -8.2 | -13.9 | -12.1 |
| |
| Cash dividends paid | 28.3 | 26.6 | 25.7 | 21.3 | 19.0 | 18.5 | 18.1 | 17.1 |
| Financing costs | | -0.1 | -0.2 | -1.0 | | | | |
| Other cash from financing | -60.6 | -56.3 | -53.9 | -47.6 | -52.2 | -45.3 | -50.1 | -17.5 |
| Cash from financing | -32.3 | -29.6 | -28.0 | -25.3 | -33.2 | -26.7 | -32.0 | -0.4 |
| |
| Free cash flow | 19.5 | 37.9 | 21.8 | 24.2 | 21.2 | 10.7 | 5.2 | -6.9 |
| Per share (diluted) | | $0.62 | $0.57 | $0.45 | | $0.23 | $0.21 | ($0.15) |
| |
| Cash paid for interest | 0.5 | 11.8 | 0.5 | 11.7 | 0.8 | 12.3 | 0.7 | 11.7 |
| Cash paid for income taxes | | 0.1 | 0.2 | 0.2 | 0.1 | 0.0 | -0.3 | 0.2 |