| In millions, except per share items | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 | Dec-31-12 | Dec-31-11 | Dec-31-10 | Dec-31-09 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Revenues: |
| Network Test Solutions | 349.6 | 386.6 | 345.7 | 376.3 | | | | |
| Network Visibility Solutions | 135.3 | 130.3 | 118.8 | 91.0 | | | | |
| Total revenues [+] | 484.8 | 516.9 | 464.5 | 467.3 | 413.4 | 311.4 | 278.5 | 178.0 |
| Products | 311.2 | 361.9 | 325.5 | 352.7 | 330.3 | 249.4 | 227.7 | 142.9 |
| Services | 173.6 | 155.0 | 139.0 | 114.5 | 83.1 | 61.9 | 50.8 | 35.1 |
| Revenue growth [+] | -6.2% | 11.3% | -0.6% | 13.0% | 32.8% | 11.8% | 56.5% | 1.2% |
| Network Test Solutions | -9.6% | 11.8% | -8.1% | | | | | |
| Network Visibility Solutions | 3.8% | 9.7% | 30.6% | | | | | |
| Cost of goods sold [+] | 103.6 | 113.9 | 115.0 | 103.0 | 82.2 | 63.3 | 60.7 | 40.6 |
| Cost of product sales | 87.5 | 97.4 | 98.8 | 89.1 | 71.7 | 56.8 | 54.4 | 36.7 |
| Cost of services | 16.0 | 16.4 | 16.2 | 13.9 | 10.5 | 6.5 | 6.3 | 3.9 |
| Gross profit | 381.3 | 403.1 | 349.5 | 364.3 | 331.3 | 248.0 | 217.8 | 137.4 |
| Gross margin | 78.6% | 78.0% | 75.2% | 78.0% | 80.1% | 79.7% | 78.2% | 77.2% |
| Selling, general and administrative [+] | 220.6 | 224.1 | 218.2 | 184.9 | 162.8 | 120.7 | 115.1 | 88.4 |
| Sales and marketing | 161.6 | 155.2 | 151.8 | 137.7 | 117.2 | 87.0 | 80.0 | 60.4 |
| General and administrative | 59.0 | 68.9 | 66.5 | 47.2 | 45.6 | 33.6 | 35.1 | 28.1 |
| Research and development | 102.5 | 113.4 | 115.2 | 117.5 | 98.2 | 75.1 | 72.5 | 54.0 |
| Other operating expenses | 39.1 | 42.3 | 46.9 | 40.8 | 30.0 | 16.0 | 17.5 | 11.4 |
| EBITDA [+] | 76.3 | 82.3 | 32.6 | 77.9 | 86.3 | 65.6 | 41.5 | 5.2 |
| EBITDA growth | -7.3% | 152.5% | -58.2% | -9.7% | 31.5% | 58.2% | 698.3% | -68.4% |
| EBITDA margin | 15.7% | 15.9% | 7.0% | 16.7% | 20.9% | 21.1% | 14.9% | 2.9% |
| Depreciation | 18.1 | 16.8 | 16.5 | 16.1 | 16.0 | 13.4 | 11.3 | 10.2 |
| EBITA | 58.2 | 65.5 | 16.1 | 61.9 | 70.3 | 52.3 | 30.2 | -5.0 |
| EBITA margin | 12.0% | 12.7% | 3.5% | 13.2% | 17.0% | 16.8% | 10.8% | -2.8% |
| Amortization of intangibles | 39.1 | 42.3 | 46.9 | 40.8 | 30.0 | 16.0 | 17.5 | 11.4 |
| EBIT [+] | 19.1 | 23.2 | -30.8 | 21.1 | 40.3 | 36.3 | 12.6 | -16.4 |
| EBIT growth | -17.8% | -175.2% | -246.3% | -47.7% | 10.9% | 187.2% | -177.1% | 2157.6% |
| EBIT margin | 3.9% | 4.5% | -6.6% | 4.5% | 9.7% | 11.7% | 4.5% | -9.2% |
| Non-recurring items | 0.7 | 0.1 | 13.6 | 8.8 | 15.9 | 1.1 | 6.6 | 10.8 |
| Interest expense | 1.9 | 8.3 | 8.3 | 7.8 | 7.2 | 7.2 | 0.5 | |
| Interest expense | 1.9 | 8.3 | 8.3 | 7.8 | 7.2 | 7.2 | 0.5 | |
| Other income (expense), net | 0.3 | -0.4 | 0.0 | 6.3 | 2.3 | 2.1 | 11.0 | -0.6 |
| Pre-tax income | 16.8 | 14.3 | -52.7 | 10.8 | 19.4 | 30.1 | 16.6 | -27.8 |
| Income taxes | 50.7 | 8.4 | -11.1 | -1.1 | -26.1 | 3.4 | 3.7 | 16.4 |
| Tax rate | 302.0% | 58.5% | 21.1% | | | 11.2% | 22.5% | |
| Net income | -33.9 | 6.0 | -41.6 | 11.9 | 45.5 | 26.7 | 12.8 | -44.2 |
| Net margin | -7.0% | 1.2% | -9.0% | 2.5% | 11.0% | 8.6% | 4.6% | -24.8% |
| |
| Basic EPS [+] | ($0.42) | $0.07 | ($0.54) | $0.16 | $0.63 | $0.39 | $0.20 | ($0.70) |
| Growth | -657.0% | -113.9% | -441.9% | -75.1% | 63.2% | 96.0% | -127.9% | 188.6% |
| Diluted EPS [+] | ($0.42) | $0.07 | ($0.54) | $0.15 | $0.54 | $0.37 | $0.19 | ($0.70) |
| Growth | -669.8% | -113.6% | -449.9% | -71.5% | 44.3% | 96.9% | -126.9% | 188.6% |
| |
| Shares outstanding (basic) [+] | 81.5 | 79.6 | 77.6 | 75.8 | 72.2 | 69.2 | 65.2 | 62.7 |
| Growth | 2.3% | 2.6% | 2.5% | 5.0% | 4.3% | 6.3% | 3.9% | -3.7% |
| Shares outstanding (diluted) [+] | 81.5 | 81.5 | 77.6 | 77.5 | 84.5 | 71.7 | 67.8 | 62.7 |
| Growth | 0.0% | 4.9% | 0.1% | -8.3% | 17.9% | 5.7% | 8.1% | -3.7% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |