| Component: (Network and Table) | |
|---|---|
| Network | 100590 - Disclosure - Consolidated Balance Sheet Components - Other Liabilities (Detail) (http://www.imperva.com/20161231/taxonomy/role/DisclosureConsolidatedBalanceSheetComponentsOtherLiabilitiesDetail) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001364962 (http://www.sec.gov/CIK) |
| Other Liabilities Noncurrent [Abstract] | Period [Axis] | |
|---|---|---|
2016-12-31 | 2015-12-31 | |
Other Liabilities Noncurrent [Abstract] | ||
Long-term deferred rent | ||
Deferred tax liability | ||
Uncertain Tax Positions | ||
Other | ||
Total other liabilities | 6,637,000 | 4,515,000 |