| Component: (Network and Table) | |
|---|---|
| Network | 138 - Disclosure - Summary of Significant Accounting Policies - Summary of Operations in Different Geographic Regions (Detail) (http://www.histogenics.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfOperationsInDifferentGeographicRegions) |
| Table | Schedule of Segment Reporting Information, by Segment [Table] |
| Reporting Entity [Axis] | 0001372299 (http://www.sec.gov/CIK) |
| Segment Reporting Information [Line Items] | Period [Axis] | ||||
|---|---|---|---|---|---|
2016-12-31 | 2015-12-31 | ||||
| Geographical [Axis] | Geographical [Axis] | ||||
| United States [Member] | Geographical [Domain] | United States [Member] | Israel [Member] | Geographical [Domain] | |
Long-lived assets | |||||