(Loss) Earnings Per Class A Share - Computation of Basic and Diluted Earnings (Loss) Per Class A Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Earnings (Loss) Per Share [Line Items]
Net Loss Attributable to Class A Shareholders	$ (7,164)	$ (69,356)
Net (Loss) Income Attributable to Class A Shareholders, Diluted	$ (7,164)	$ (69,356)
Weighted-Average Class A Shares Outstanding, Basic (in shares)	186,226,675	182,548,852
Weighted-Average Class A Shares Outstanding, Diluted (in shares)	186,226,675	182,548,852
(Loss) Earnings Per Class A Share, Basic (in dollars per share)	$ (0.04)	$ (0.38)
(Loss) Earnings Per Class A Share, Diluted (in dollars per share)	$ (0.04)	$ (0.38)
Och-Ziff Operating Group A Units
Earnings (Loss) Per Share [Line Items]
Net (Loss) Income Attributable to Class A Shareholders, Effect of dilutive securities	$ 0	$ 0
Weighted-Average Class A Shares Outstanding, Effect of dilutive securities (in shares)	0	0
Number of Antidilutive Units Excluded from Diluted Calculation (in shares)	287,004,764	297,317,019
Restricted Share Units (RSUs)
Earnings (Loss) Per Share [Line Items]
Weighted-Average Class A Shares Outstanding, Effect of dilutive securities (in shares)	0	0
Number of Antidilutive Units Excluded from Diluted Calculation (in shares)	19,730,352	14,758,228

Earnings loss per share.

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs).

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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