| In millions, except per share items | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 | Dec-31-12 | Dec-31-11 | Dec-31-10 |
| | 20-F | 20-F | 20-F | 20-F | 20-F | 20-F | S-1/A |
| Net income | 51.9 | 34.8 | 16.1 | 27.1 | 19.7 | 10.1 | 18.7 |
| Depreciation and amortization [+] | 43.4 | 44.8 | 35.5 | 30.4 | 32.2 | 31.3 | 28.8 |
| Depreciation | 24.9 | 25.8 | 21.3 | 20.5 | 22.1 | 21.8 | 21.1 |
| Amortization of intangible assets | 18.4 | 19.0 | 14.2 | 9.9 | 10.1 | 9.6 | 7.7 |
| Stock-based compensation | 12.2 | 10.0 | 8.8 | 4.5 | 4.4 | 4.0 | 4.1 |
| Deferred taxes | 1.4 | 2.4 | -0.1 | -1.4 | 0.4 | -0.4 | -0.6 |
| Change in working capital [+] | -193.6 | -36.1 | 134.1 | -11.6 | 59.9 | -91.0 | -107.0 |
| Accounts receivable | -188.0 | 40.7 | 117.9 | 4.6 | 48.3 | -84.8 | -70.3 |
| Inventories | -73.2 | 42.5 | 146.3 | -25.1 | 23.2 | -49.0 | -8.4 |
| Other current assets | 18.0 | -61.7 | -16.2 | -8.9 | -1.3 | -5.4 | 0.2 |
| Accounts payable | 59.2 | -46.6 | -122.7 | -1.1 | -8.6 | 43.1 | -19.3 |
| Other | -9.5 | -11.0 | 8.7 | 18.8 | -1.6 | 5.2 | -9.2 |
| Other operating activities | 37.1 | -6.3 | -12.1 | -8.3 | 6.9 | 1.1 | -8.6 |
| Cash from operations | -47.6 | 49.7 | 182.2 | 40.6 | 123.5 | -44.9 | -64.6 |
| |
| Capital expenditures | -0.2 | -0.8 | -8.0 | -5.1 | -0.8 | -0.2 | -10.5 |
| Purchases of property and equipment | -0.2 | -0.8 | -8.0 | -5.1 | -0.8 | -0.2 | -10.5 |
| Purchases of intangible assets | | | | | | -1.5 | |
| Acquisitions | | | | -127.4 | | | -63.7 |
| Other cash from investing | -3.6 | -6.8 | -51.5 | -49.3 | -57.3 | -43.8 | -94.9 |
| Cash from investing | -3.8 | -7.6 | -59.5 | -181.8 | -58.2 | -45.6 | -169.0 |
| |
| Cash dividends paid | -3.8 | -3.9 | -2.4 | -1.9 | -1.9 | -1.9 | -1.9 |
| Issuance of common stock, net | -99.6 | | | | 0.0 | -4.6 | 122.4 |
| Financing costs | -8.1 | -9.0 | -3.3 | -11.1 | -0.4 | -1.3 | -0.4 |
| Other cash from financing | 101.1 | -33.3 | -51.2 | 116.8 | -55.6 | 78.3 | 144.3 |
| Cash from financing | 5.8 | -28.3 | -50.3 | 126.0 | -57.1 | 73.2 | 265.3 |
| |
| Free cash flow | -47.8 | 49.0 | 174.3 | 35.4 | 122.7 | -45.1 | -75.1 |
| Per share (diluted) | ($1.06) | $1.04 | $3.77 | $0.78 | $2.70 | ($0.98) | ($1.62) |
| |
| Cash paid for interest | 26.1 | 21.5 | 21.4 | | | | |
| Cash paid for income taxes | 2.1 | 0.9 | 3.4 | 0.7 | 7.5 | 4.1 | 1.8 |