Noncontrolling Interests - Components of Net (Loss) Income Attributable to Noncontrolling Interests (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Noncontrolling Interest [Line Items]
Net (Loss) Income Attributable to Noncontrolling Interests	$ 9,778	$ (87,845)
Och-Ziff Operating Group A Units
Noncontrolling Interest [Line Items]
Net (Loss) Income Attributable to Noncontrolling Interests	9,635	(88,019)
Consolidated Och-Ziff funds
Noncontrolling Interest [Line Items]
Net (Loss) Income Attributable to Noncontrolling Interests	0	262
Other
Noncontrolling Interest [Line Items]
Net (Loss) Income Attributable to Noncontrolling Interests	$ 143	$ (88)