In millions, except per share items | Dec-31-11 | Dec-31-10 | Dec-31-09 | Dec-31-08 | Dec-31-07 | Dec-31-06 | Dec-31-05 | Dec-31-04 |
| 10-K | 10-K | 10-K | 10-K | S-1/A | S-1/A | S-1/A | S-1/A |
Revenue: | | | | | | | | |
Subscription | 48.9 | 46.2 | 44.0 | | | | | |
Services | 17.3 | 12.2 | 10.9 | | | | | |
Usage | 14.2 | 11.4 | 8.2 | | | | | |
Total revenue | 80.4 | 69.7 | 63.1 | 57.0 | 43.1 | 21.5 | 13.3 | 9.0 |
Total revenue growth | 15.2% | 10.6% | 10.7% | 32.3% | 100.8% | 61.9% | 47.4% | |
Cost of revenue: | | | | | | | | |
Cost of subscription and usage | 13.5 | 12.4 | 12.2 | | | | | |
Cost of services | 17.6 | 13.2 | 12.6 | | | | | |
Total cost of revenue | 31.1 | 25.5 | 24.8 | | | | | |
Gross profit | 49.2 | 44.2 | 38.3 | | 24.4 | | | |
Gross margin | 61.2% | 63.4% | 60.7% | | 56.6% | | | |
|
Operating expenses: | | | | | | | | |
Sales and marketing | 25.4 | 22.5 | 21.6 | | 19.4 | | | |
Research and development | 10.7 | 10.6 | 10.0 | | 7.2 | | | |
General and administrative | 9.3 | 6.6 | 6.0 | | 4.5 | | | |
Amortization of other intangibles | 1.0 | 0.9 | 1.4 | | | | | |
Total operating expenses | 46.4 | 40.4 | 39.0 | | 32.6 | | | |
Income (loss) from operations | 2.8 | 3.8 | -0.7 | | -8.3 | | | |
Operating margin | 3.5% | 5.4% | -1.1% | | -19.2% | | | |
Interest income | 0.1 | 0.1 | 0.0 | | 0.3 | | | |
Interest expense | | -0.1 | -0.4 | | -0.9 | | | |
Other income (expense) | 0.0 | 0.0 | -0.8 | | 1.6 | | | |
Income before income taxes | 2.9 | 3.8 | -1.9 | | | | | |
Provision (benefit) for income taxes | -12.0 | 0.3 | 0.2 | | | | | |
Net income | 14.9 | 3.5 | -2.1 | | -10.5 | | | |
|
Net income attributable to common stockholders (note 2) | | | | | | | | |
Basic | 14.9 | 3.0 | -2.1 | | | | | |
Diluted | 14.9 | 3.0 | -2.1 | | | | | |
|
Net income (loss) per share attributable to common stockholders (note 2): | | | | | | | | |
Basic | $0.82 | $0.22 | ($0.29) | | ($1.69) | | | |
Diluted | $0.76 | $0.20 | ($0.29) | | ($1.69) | | | |
|
Weighted average shares used in computing net income per share attributable to common stockholders [Abstract] | | | | | | | | |
Basic | 18.2 | 14.2 | 7.3 | | 6.3 | | | |
Diluted | 19.5 | 17.5 | 7.3 | | | | | |