Consolidated and Combined Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net Income (Loss)	$ 5,108	$ (6,175)	$ 4,492
Other Comprehensive Income, Net of Tax — Currency Translation Adjustment	252	622	1,243
Comprehensive Income (Loss)	5,360	(5,553)	$ 5,735
Comprehensive Income (Loss) Attributable to Redeemable Non-Controlling Interests	8,285	(6)
Comprehensive Loss Attributable to PJT Partners Inc.	$ (2,925)	$ (5,547)