Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income before noncontrolling interests	$ 149,897	$ 129,181
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,859	3,816
Deferred income taxes	29,585	25,083
Capital (gains) losses on the sale of investment securities	(93)	(786)
Net (gain) loss on the tax receivable agreements	(501)	(650)
Loss on disposal of property and equipment	20	58
Amortization of debt issuance costs	336	336
Share-based compensation	50,270	55,437
Net investment (gain) loss of consolidated investment products	(1,567)	0
Purchase of investments by consolidated investment products	(51,546)	0
Proceeds from sale of investments by consolidated investment products	28,596	0
Change in assets and liabilities resulting in an increase (decrease) in cash:
Accounts receivable	(13,934)	(5,467)
Prepaid expenses and other assets	1,127	(1,799)
Accounts payable and accrued expenses	63,959	53,931
Class B liability awards	(506)	(1,422)
Deferred lease obligations	1,731	541
Net change in operating assets and liabilities of consolidated investment products	(11,604)	0
Net cash provided by operating activities	249,629	258,259
Cash flows from investing activities
Acquisition of property and equipment	(1,312)	(2,763)
Leasehold improvements	(3,037)	(3,808)
Proceeds from sale of investment securities	6,382	2,035
Purchase of investment securities	(5,250)	(14)
Net cash used in investing activities	(3,217)	(4,550)
Cash flows from financing activities
Partnership distributions	(81,869)	(95,333)
Dividends paid	(100,723)	(90,245)
Payment of debt issuance costs	(611)	0
Proceeds from issuance of notes payable	60,000	0
Principal payments on notes payable	(60,000)	0
Payment under the tax receivable agreements	(30,234)	(20,953)
Net proceeds from issuance of common stock	162,494	0
Payment of costs directly associated with the issuance of Class A common stock	(294)	0
Purchase of equity and subsidiary equity	(162,494)	0
Taxes paid related to employee net share settlement	(1,477)	(762)
Capital contributions to consolidated investment products	14,655	0
Net cash used in financing activities	(200,553)	(207,293)
Net increase (decrease) in cash and cash equivalents	45,859	46,416
Cash and cash equivalents
Beginning of period	156,777	166,193
End of period	202,636	212,609
Noncash activity:
Establishment of deferred tax assets	133,544	31,132
Establishment of amounts payable under tax receivable agreements	$ 111,077	$ 24,463