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Investment Portfolio - Narrative (Detail) - Securities held in Consolidated Funds - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Fair value investments	$ 83,249,245	$ 153,730,480
Parent
Fair value investments	50,500,000	84,700,000
Redeemable Noncontrolling Interest
Fair value investments	$ 32,800,000	$ 69,000,000.0

X

- Definition

Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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