| Component: (Network and Table) | |
|---|---|
| Network | 100480 - Disclosure - Goodwill and Intangible Assets - Intangible Assets, Net (Details) (http://pjtpartners.com/20161231/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsIntangibleAssetsNetDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001626115 (http://www.sec.gov/CIK) |
| Goodwill And Intangible Assets Disclosure [Abstract] | Period [Axis] | |||
|---|---|---|---|---|
2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | |
Goodwill And Intangible Assets Disclosure [Abstract] | ||||
Finite-Lived Intangible Assets | ||||
Customer Relationships | ||||
Client Backlog | ||||
Trade Name | ||||
Client Mandates and Other | ||||
Total Intangible Assets | ||||
Accumulated Amortization | ( | ( | ||
Intangible Assets, Net | 14,713,000 1 | 23,646,000 1 | ||