Concentration of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2020

Risks and Uncertainties [Abstract]

Schedules of Concentration of Risk, by Risk Factor

The following affiliated funds provided 10% or more of the total revenue of the Company:

	Years Ended December 31,
(in thousands, except percentages)	2020			2019			2018
Cohen & Steers Preferred Securities and Income Fund, Inc. (CPX):
Investment advisory and administration fees	$	69,197		$	56,638		$	53,059
Distribution and service fees	13,499			12,753			13,525
Total	$	82,696		$	69,391		$	66,584
Percent of total revenue	19.3		%	16.9		%	17.5		%
Cohen & Steers Real Estate Securities Fund, Inc. (CSI):
Investment advisory and administration fees	$	38,961		$	41,971		$	31,759
Distribution and service fees	6,943			8,128			6,841
Total	$	45,904		$	50,099		$	38,600
Percent of total revenue	10.7		%	12.2		%	10.1		%