| Component: (Network and Table) | |
|---|---|
| Network | 175 - Disclosure - Segment Reporting - Geographic Information of Property, Plant, Equipment as well as Intangible Assets and Goodwill (Detail) (http://northernpower.com/taxonomy/role/DisclosureSegmentReportingGeographicInformationOfPropertyPlantEquipmentAsWellAsIntangibleAssetsAndGoodwill) |
| Table | Schedule of Segment Reporting Information, by Segment [Table] |
| Reporting Entity [Axis] | 0001605997 (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] | Rest of The World [Member] | Geographical [Domain] | United States [Member] | Rest of The World [Member] | Geographical [Domain] | |
Long-lived assets | ||||||