| In millions, except per share items | Mar-31-16 | Mar-31-15 | Mar-31-14 | Mar-31-13 | Mar-31-12 | Mar-31-11 | Mar-31-10 | Mar-31-09 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | -9.2 | 4.9 | 39.4 | 39.7 | 29.9 | 13.0 | 1.9 | -9.5 |
| Depreciation and amortization | 19.8 | 15.5 | 14.2 | 12.0 | 13.0 | 15.8 | 22.8 | 29.0 |
| Stock-based compensation | 4.3 | 4.1 | 2.6 | 2.3 | 2.0 | 3.2 | 2.5 | 2.6 |
| Deferred taxes | 1.6 | 1.5 | 6.1 | 1.1 | 1.0 | -3.2 | -3.6 | -6.4 |
| Change in working capital [+] | -1.8 | 33.6 | -18.1 | -22.6 | 54.7 | -34.0 | 5.6 | -22.5 |
| Accounts receivable | -10.2 | 14.8 | -10.9 | -3.0 | -4.5 | 5.5 | 9.4 | |
| Inventories | 13.3 | -14.0 | -42.2 | 1.6 | -38.5 | 20.6 | 40.0 | 2.8 |
| Other current assets | 3.3 | -0.8 | -0.8 | 0.1 | 0.9 | 0.3 | 0.2 | |
| Accounts payable | 0.9 | -21.6 | 26.8 | 5.4 | 21.2 | 2.9 | -7.7 | -29.6 |
| Accrued expenses | -3.4 | -0.2 | -1.3 | 3.0 | 8.6 | 9.2 | -0.6 | |
| Income taxes | -6.7 | -3.5 | -6.9 | 9.1 | -4.9 | -1.5 | 3.3 | |
| Other | 1.0 | 59.0 | 17.2 | -38.8 | 72.0 | -71.2 | -39.1 | 4.3 |
| Other operating activities | 4.4 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 26.4 |
| Cash from operations | 19.1 | 59.7 | 44.2 | 32.7 | 100.7 | -5.1 | 29.3 | 19.6 |
| |
| Capital expenditures [+] | -38.0 | -22.2 | -24.4 | -16.3 | -15.0 | -11.8 | -6.5 | -14.2 |
| Purchases of property and equipment | -38.0 | -22.2 | -24.4 | -16.3 | -15.0 | -11.8 | -6.5 | -14.2 |
| Sales of property and equipment | | | | | 0.2 | 0.1 | | |
| Acquisitions | | -8.4 | | | | | | |
| Other cash from investing | 0.0 | 0.0 | 0.0 | | | | | |
| Cash from investing | -38.0 | -30.6 | -24.3 | -16.3 | -14.8 | -11.7 | -6.5 | -14.2 |
| |
| Cash dividends paid | -4.9 | -6.5 | -5.3 | | | | | -3.8 |
| Repurchase of common stock, net | 0.4 | -1.0 | -28.0 | -5.4 | -77.3 | -1.6 | | |
| Other cash from financing | -0.2 | -1.1 | -0.2 | 0.8 | 1.6 | 0.6 | 0.2 | |
| Cash from financing | -4.7 | -8.6 | -33.5 | -4.6 | -75.7 | -0.9 | 0.2 | -3.8 |
| |
| Free cash flow | -18.8 | 37.5 | 19.8 | 16.4 | 85.7 | -16.9 | 22.8 | 5.4 |
| Per share (diluted) | ($1.45) | $2.87 | $1.46 | $1.19 | $4.91 | ($0.91) | $1.25 | $0.30 |
| |
| Cash paid for interest | 0.8 | 0.4 | 0.1 | 0.1 | 0.0 | 0.0 | 0.3 | |
| Cash paid for income taxes | 0.2 | 3.3 | 13.9 | 8.3 | 9.5 | 9.2 | 1.9 | |