In millions, except per share items | Oct-31-17 | Jul-31-17 | Apr-30-17 | Jan-31-17 | Oct-31-16 | Jul-31-16 | Apr-30-16 | Jan-31-16 |
| 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
Revenues | 0.7 | 0.7 | 0.6 | 0.7 | 0.6 | 2.2 | 4.8 | 7.5 |
Revenues growth | 8.5% | -69.5% | -87.2% | -91.1% | -94.0% | -83.7% | -65.1% | -37.0% |
Costs and expenses: | | | | | | | | |
Direct cost of revenues | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.9 | 2.2 | 3.4 |
Research and development | 0.6 | 0.6 | 0.8 | 1.2 | 1.4 | 1.3 | 0.9 | 0.4 |
Selling, general and administrative | 19.8 | 19.9 | 14.5 | 12.0 | 10.8 | 9.0 | 8.4 | 8.2 |
Total costs and expenses | 44.7 | 44.8 | 23.6 | 17.4 | 12.4 | 11.2 | 11.4 | 11.9 |
Loss from operations | -52.0 | -42.1 | -37.1 | -35.0 | -11.8 | -9.1 | -6.6 | -4.5 |
Operating margin | -7825.9% | -6403.8% | -6046.8% | -5257.7% | -1927.9% | -421.5% | -137.4% | -60.3% |
|
Other income (expense): | | | | | | | | |
Interest income | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Other income | -3.0 | | -2.2 | | 0.4 | 0.4 | 0.7 | 0.7 |
Total other income (expense) | -3.0 | | -2.2 | | 0.4 | 0.4 | 0.7 | 0.7 |
Loss from continuing operations before provision for income taxes | -59.7 | -49.0 | -12.0 | -12.0 | -12.0 | -8.7 | -5.9 | -3.8 |
Provision for income taxes | -0.4 | -0.4 | -0.3 | -0.4 | -0.2 | -0.2 | 2.4 | 1.7 |
Tax rate | 0.6% | | | 3.1% | 1.8% | | -41.8% | -44.5% |
Loss from continuing operations | -14.1 | | | | -3.4 | | | |
|
Loss from discontinued operations: | | | | | | | | |
Loss from discontinued operations | -1.5 | | | | -0.9 | | | |
Loss attributable to noncontrolling interests | 0.2 | | | | 0.1 | | | |
Loss from discontinued operations attributable to Straight Path Communications Inc. | -2.1 | -1.6 | -1.4 | -1.2 | -1.0 | -0.3 | -0.8 | -0.6 |
Net loss attributable to Straight Path Communications Inc. | -55.8 | -44.6 | -39.3 | -35.2 | -11.8 | -8.3 | -7.7 | -5.1 |
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Loss per share attributable to Straight Path Communications Inc. stockholders: | | | | | | | | |
Basic and diluted - continuing operations | 0.0 | | | | 0.0 | | | |
Basic and diluted - discontinued operations | 0.0 | | | | 0.0 | | | |
|
Basic and diluted - total | ($4.56) | ($3.67) | ($3.25) | ($2.91) | ($0.98) | ($0.69) | ($0.65) | ($0.43) |
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Weighted-average number of shares used in calculation of loss per share: | | | | | | | | |
Basic and diluted | 12.2 | 12.1 | 12.1 | 12.0 | 11.9 | 11.9 | 11.8 | 11.6 |