| In millions, except per share items | Mar-31-16 | Dec-31-15 | Sep-30-15 | Jun-30-15 | Mar-31-15 | Dec-31-14 | Sep-30-14 | Jun-30-14 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | 15.4 | 14.8 | 22.0 | 15.0 | 15.2 | 5.5 | 8.1 | 14.0 |
| Depreciation and amortization [+] | 31.9 | 30.6 | 32.2 | 31.4 | 29.6 | 29.9 | 26.9 | 28.1 |
| Depreciation | 22.7 | 20.9 | 22.1 | 21.9 | 20.1 | 18.7 | 18.9 | 19.6 |
| Amortization | 9.3 | 9.8 | 10.0 | 9.5 | 9.5 | 11.1 | 8.0 | 8.5 |
| Stock-based compensation | 3.2 | 5.2 | 5.1 | 4.9 | 4.2 | 5.0 | 4.6 | 3.7 |
| Deferred taxes | 3.1 | 8.8 | 0.1 | 5.0 | -2.9 | 4.8 | 0.9 | -1.8 |
| Change in working capital [+] | -13.1 | 33.0 | 19.3 | -8.4 | -16.5 | 37.4 | -5.3 | -8.7 |
| Accounts receivable | -2.0 | 19.0 | 1.4 | -12.2 | 9.1 | -4.6 | -2.3 | 0.3 |
| Inventories | 1.2 | 0.2 | -1.1 | -1.3 | -2.5 | 0.4 | -0.3 | -1.6 |
| Other current assets | -2.1 | -15.2 | 3.3 | -10.3 | 2.7 | 0.5 | 0.1 | -9.2 |
| Accounts payable | -4.6 | 0.4 | -8.5 | 23.3 | -23.2 | 6.6 | 4.8 | 2.7 |
| Accrued expenses | -3.8 | 21.1 | 22.9 | -9.9 | -2.2 | 27.5 | -4.7 | -0.4 |
| Other | -1.8 | 7.5 | 1.3 | 2.0 | -0.4 | 7.0 | -2.8 | -0.5 |
| Other operating activities | 4.2 | 17.0 | -18.2 | 7.7 | 1.3 | 2.9 | 11.0 | 7.1 |
| Cash from operations | 44.7 | 109.4 | 60.5 | 55.7 | 30.9 | 85.5 | 46.2 | 42.4 |
| |
| Capital expenditures [+] | -16.5 | -38.3 | -43.6 | -24.7 | -31.7 | -44.8 | -21.4 | -25.0 |
| Purchases of property and equipment | -16.5 | -38.3 | -43.6 | -24.7 | -31.7 | -44.8 | -21.4 | -25.0 |
| Sales of property and equipment | | | -7.6 | 7.6 | | | | |
| Purchases of intangible assets | | -0.2 | -3.9 | | | | -1.9 | |
| Acquisitions | -2.7 | | -79.9 | -8.4 | -15.5 | -218.2 | 0.0 | |
| Other cash from investing | | | 36.7 | -7.4 | | | | |
| Cash from investing | -11.8 | -38.5 | -98.3 | -33.0 | -39.8 | -263.0 | -23.3 | -25.0 |
| |
| Repurchase of common stock, net | -3.9 | -0.1 | -0.6 | -0.1 | -3.9 | -0.5 | -0.5 | -0.1 |
| Option exercises | 0.1 | 0.5 | 0.0 | 0.1 | 0.4 | 0.5 | 0.2 | 0.0 |
| Financing costs | | | | | | 0.0 | -12.1 | -2.5 |
| Other cash from financing | -30.1 | -61.2 | 35.6 | -17.7 | 0.6 | 74.6 | 46.0 | -18.9 |
| Cash from financing | -34.0 | -61.8 | 35.0 | -17.9 | -3.8 | 73.6 | 57.4 | -16.5 |
| |
| Free cash flow | 28.2 | 71.2 | 17.0 | 31.0 | -0.8 | 40.7 | 24.8 | 17.3 |
| Per share (diluted) | $0.62 | $1.57 | $0.37 | $0.68 | ($0.02) | $0.91 | $0.55 | $0.39 |
| |
| Cash paid for interest | 6.9 | 2.1 | 7.7 | 2.3 | 7.3 | 1.9 | 7.5 | 2.8 |
| Cash paid for income taxes | 1.1 | 8.9 | 1.2 | 16.3 | 2.0 | 2.7 | 5.2 | 14.1 |