| In millions, except per share items | Jun-30-14 | Mar-31-14 | Dec-31-13 | Sep-30-13 | Jun-30-13 | Mar-31-13 | Dec-31-12 | Sep-30-12 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net revenues | 28.5 | 24.8 | 25.7 | 25.7 | 26.9 | 26.2 | 23.4 | 26.9 |
| Net revenues growth | 6.2% | -5.3% | 9.8% | -4.2% | 5.6% | 6.9% | -6.0% | -9.7% |
| Cost of revenues | 11.8 | 10.1 | 11.6 | 11.3 | 11.8 | 10.7 | 9.7 | 10.8 |
| Gross margin | 16.7 | 14.8 | 14.1 | 14.5 | 15.1 | 15.5 | 13.7 | 16.1 |
| Gross margin | 58.6% | 59.4% | 54.8% | 56.2% | 56.1% | 59.2% | 58.4% | 59.8% |
| |
| Operating expenses: | | | | | | | | |
| Research and development | 9.4 | 6.4 | 6.3 | 6.1 | 6.5 | 6.0 | 6.2 | 8.8 |
| Selling, general and administrative | 5.8 | 6.1 | 6.9 | 6.3 | 6.8 | 6.4 | 6.2 | 6.7 |
| Acquisition and restructuring related costs | 1.7 | | | | | 0.3 | | |
| Total operating expenses | 17.0 | 12.5 | 64.9 | 12.4 | 13.3 | 12.7 | 14.1 | 18.4 |
| Income (loss) from operations | -0.3 | 2.3 | 0.8 | 2.0 | 1.8 | 2.9 | -0.4 | -2.3 |
| Operating margin | -1.0% | 9.1% | 3.2% | 7.9% | 6.7% | 10.9% | -1.7% | -8.6% |
| Interest income (expense) and other, net | 0.0 | 0.0 | 0.1 | 0.0 | -0.1 | -0.1 | | -0.1 |
| Income (loss) from continuing operations before provision for income taxes | -0.3 | 2.2 | 0.8 | 2.0 | 1.7 | 2.8 | -5.0 | -2.4 |
| Provision (benefit) for income taxes | 0.0 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | -0.2 | 0.9 |
| Tax rate | 1.9% | 2.3% | 3.3% | 2.8% | 3.5% | 3.0% | 4.6% | |
| Income (loss) from continuing operations, net of tax | -0.3 | 2.2 | 0.8 | 2.0 | 1.7 | 2.7 | -0.2 | -3.3 |
| Loss from discontinued operations, net of tax | | | 0.3 | | | -0.1 | -27.4 | -3.0 |
| Net income (loss) | -0.3 | 2.2 | 1.0 | 2.0 | 1.7 | 2.6 | -0.6 | -6.3 |
| |
| Basic net income (loss) per share: | | | | | | | | |
| Income (loss) from continuing operations | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| |
| Loss from discontinued operations | | | | | | | | |
| Net income (loss) | ($0.01) | $0.05 | $0.02 | $0.04 | $0.04 | $0.06 | ($0.02) | ($0.14) |
| |
| Diluted net income (loss) per share: | | | | | | | | |
| Income (loss) from continuing operations | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| |
| Loss from discontinued operations | | | | | | | | |
| Net income (loss) | ($0.01) | $0.05 | $0.01 | $0.04 | $0.04 | $0.06 | ($0.02) | ($0.14) |
| |
| Shares used to compute basic per share amounts | 45.9 | 45.8 | 45.6 | 45.7 | 45.6 | 45.4 | 44.9 | 44.9 |
| Shares used to compute diluted per share amounts | 45.9 | 47.1 | 46.5 | 46.7 | 46.3 | 46.1 | 44.9 | 44.9 |