Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net Income	$ 189,955	$ 212,426	$ 63,787
Other Comprehensive Income (Loss), Net of Tax — Currency Translation Adjustment	(1,444)	2,310	1,476
Comprehensive Income	188,511	214,736	65,263
Comprehensive Income Attributable to Non-Controlling Interests	83,126	95,919	34,928
Comprehensive Income Attributable to PJT Partners Inc.	$ 105,385	$ 118,817	$ 30,335