In millions, except per share items | Mar-31-19 | Sep-30-18 | Jun-30-18 | Mar-31-18 | Dec-31-17 | Sep-30-17 | Jun-30-17 | Mar-31-17 |
| 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
Revenue | | 117.0 | 119.0 | 126.7 | 130.4 | 126.0 | 115.7 | 112.7 |
Revenue growth | | -7.2% | 2.9% | 12.4% | 7.5% | -12.9% | -29.6% | -32.9% |
Cost of revenue | | 94.2 | 95.4 | 100.7 | 101.6 | 99.1 | 88.5 | 83.3 |
Gross profit (loss) | | 22.7 | 23.7 | 26.0 | 28.8 | 26.9 | 27.2 | 29.4 |
Gross margin | | 19.4% | 19.9% | 20.5% | 22.1% | 21.3% | 23.5% | 26.1% |
|
Operating expenses: | | | | | | | | |
Selling, general and administrative | | 36.2 | 41.7 | 44.0 | 45.8 | 45.9 | 39.7 | 35.8 |
Research and development | | 20.3 | 19.7 | 18.6 | 18.4 | 18.8 | 19.0 | 20.0 |
Restructuring and exit costs | | 0.0 | 1.3 | 1.2 | 2.3 | 2.2 | | 1.1 |
Total operating expenses | | 56.8 | 62.9 | 64.0 | 66.7 | 68.2 | 61.0 | 58.3 |
Loss from operations | | -34.0 | -39.2 | -38.0 | -37.9 | -41.3 | -33.8 | -28.8 |
Operating margin | | -29.1% | -32.9% | -30.0% | -29.1% | -32.8% | -29.2% | -25.6% |
Interest expense | | -2.3 | -1.2 | -0.2 | -1.4 | -0.4 | -0.3 | -0.2 |
Other components of defined benefit plans, net | | 0.0 | 0.1 | 0.2 | 0.0 | -0.4 | -0.3 | -0.2 |
Other income | | -0.3 | -0.3 | -0.3 | -0.2 | 0.0 | -0.1 | -0.1 |
Foreign currency exchange loss, net | | 0.6 | 0.5 | 0.3 | 0.3 | 0.0 | 0.1 | 0.2 |
Loss from continuing operations before income taxes | | -39.0 | -42.9 | -40.7 | -39.5 | -41.2 | -33.9 | -22.4 |
Income tax provision | | 1.3 | 1.5 | 2.6 | 3.7 | 5.4 | 5.7 | 4.9 |
Loss from continuing operations | | | | -10.5 | | | | |
Income from discontinued operations, net of income taxes | | | | 1.3 | | | | |
Net loss | | -39.0 | -43.1 | -41.9 | -43.1 | -46.5 | -39.5 | -27.3 |
|
Net income (loss) per share - basic and diluted: | | | | | | | | |
Continuing operations | | | | 0.0 | | | | |
|
Basic and diluted (in dollars per share) | | ($1.02) | ($1.16) | ($1.14) | ($1.21) | ($1.35) | ($1.19) | ($0.84) |
|
Weighted average common shares outstanding: | | | | | | | | |
Weighted average common shares outstanding, basic and diluted | | 38.4 | 37.0 | 36.4 | 35.1 | 34.2 | 32.9 | 32.0 |