Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenues

Revenues for the three and six months ended June 30, 2018 and 2017 consisted of the following:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(in thousands)
Subject to contracts with customers:
Investment advisory and services fees
Base fees	$	561,572	$	516,485	$	1,128,910	$	1,008,661
Performance-based fees	35,298		14,678		41,558		20,792
Bernstein research services	106,211		109,470		220,611		222,211
Distribution revenues
All-in-management fees	64,329		58,624		131,077		113,143
12b-1 fees	22,075		23,688		44,609		48,478
Other	18,714		17,837		37,436		35,082
Other revenues
Shareholder servicing fees	18,985		18,549		38,515		36,513
Other	5,384		3,994		11,012		7,946
	832,568		763,325		1,653,728		1,492,826
Not subject to contracts with customers:
Dividend and interest income, net of interest expense	9,062		13,153		27,737		22,919
Investment gains (losses)	213		24,113		26,295		49,314
Other revenues	2,895		1,722		4,765		2,171
	12,170		38,988		58,797		74,404
Total net revenues	$	844,738	$	802,313	$	1,712,525	$	1,567,230