| In millions, except per share items | Dec-31-16 | Dec-26-15 | Dec-27-14 | Dec-28-13 | Dec-29-12 | Dec-31-11 | Dec-25-10 | Dec-26-09 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 19.0 | 12.9 | 6.9 | 6.4 | 11.8 | 0.8 | -11.7 | -8.7 |
| Depreciation and amortization | 3.1 | 3.3 | 3.4 | 3.4 | 2.9 | 3.0 | 3.7 | 4.1 |
| Asset impairment charges | | | | | | | 1.8 | 0.1 |
| Stock-based compensation | 0.9 | 0.8 | 0.5 | 0.4 | 0.3 | 0.5 | 0.6 | 0.6 |
| Deferred taxes | 0.1 | 0.3 | 1.5 | 1.1 | -0.8 | | 0.4 | -1.5 |
| Change in working capital [+] | 5.8 | -7.7 | -3.2 | 2.1 | -1.9 | 6.8 | 6.4 | 12.2 |
| Accounts receivable | 4.9 | -7.1 | 3.7 | -2.9 | 3.2 | -2.5 | 1.1 | 2.3 |
| Inventories | 0.7 | -2.3 | 5.7 | -0.2 | 5.8 | -0.9 | -3.7 | 12.7 |
| Other current assets | 0.1 | 1.7 | -3.0 | -0.1 | 0.6 | -0.2 | 4.4 | -2.7 |
| Accounts payable | -1.1 | -1.0 | -6.9 | 4.0 | -9.5 | 9.9 | 1.7 | 1.6 |
| Other | 1.3 | 1.0 | -2.7 | 1.4 | -2.0 | 0.6 | 3.0 | -1.6 |
| Other operating activities | 0.3 | 0.2 | 0.3 | 0.1 | 0.1 | 3.4 | 0.0 | 0.6 |
| Cash from operations | 29.3 | 9.8 | 9.5 | 13.5 | 12.4 | 14.5 | 1.3 | 7.3 |
| |
| Capital expenditures [+] | -3.7 | -3.9 | -4.7 | -6.2 | -13.2 | -2.8 | -1.9 | -1.9 |
| Purchases of property and equipment | -3.7 | -3.9 | -4.7 | -6.2 | -13.2 | -2.8 | -1.9 | -1.9 |
| Sales of property and equipment | 0.1 | 0.9 | 0.8 | 1.3 | 4.2 | 0.6 | 0.6 | 0.5 |
| Sales of short-term investments, net [+] | 0.0 | 0.9 | -1.1 | 0.0 | -2.0 | 0.3 | 1.5 | 1.0 |
| Purchases of short-term investments | -0.1 | -0.1 | -4.3 | 0.0 | -2.0 | 0.0 | | -0.1 |
| Sales of short-term investments | 0.0 | 1.0 | 3.2 | | | 0.3 | 1.5 | 1.1 |
| Other cash from investing | | | 3.9 | 0.0 | 0.0 | 0.0 | -1.0 | 0.0 |
| Cash from investing | -3.7 | -2.1 | -1.1 | -5.0 | -10.9 | -1.9 | -0.8 | -0.4 |
| |
| Cash dividends paid | -6.8 | -1.8 | -0.4 | | | | | |
| Repurchase of common stock, net | -0.3 | -0.2 | | | | | | |
| Option exercises | 0.1 | 0.6 | 0.4 | 0.1 | 0.1 | 0.0 | 0.0 | |
| Financing costs | | | | -0.4 | -0.4 | -2.4 | | |
| Other cash from financing | -0.5 | 0.5 | 0.2 | -4.9 | -1.9 | -15.9 | -0.7 | -6.7 |
| Cash from financing | -7.7 | -2.0 | -0.7 | -4.7 | -1.6 | -13.5 | -0.7 | -6.7 |
| |
| Free cash flow | 25.5 | 5.9 | 4.8 | 7.2 | -0.7 | 11.7 | -0.6 | 5.5 |
| Per share (diluted) | $1.49 | $0.35 | $0.29 | $0.44 | ($0.05) | $0.74 | ($0.04) | $0.39 |
| |
| Cash paid for interest | | | | | 0.8 | 1.4 | 1.5 | 2.6 |