Equity Investments in Unconsolidated Subsidiaries - Additional Information (Detail) (CT Opportunity Partners I, LP [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2014	Jan. 31, 2011
Schedule of Equity Method Investments [Line Items]
Promote revenue, percentage of fund's profit		17.70%
Preferred return		9.00%
Return of capital to partners		100.00%
Promote revenue		$ 14.0
Distributions	14.1
Advance distribution of promote revenue	10.2
Percentage of promote distributions pool for employees			45.00%
Percentage of granted promote distributions to employees	96.00%	96.00%
Percentage of grants vesting schedule	65.00%	65.00%
Percentage of grants vesting upon receipt of dividends	35.00%	35.00%
Description of incentive management fee grants to employees vesting schedule		(i) one-third on the date of grant; (ii) one-third on September 13, 2012; and (iii) the remainder is contingent on continued employment with an affiliate of our Manager and upon our receipt of promote distributions from CTOPI. Of the remaining 35% of these grants, 31% are fully vested as a result of an acceleration event, and 4% vest solely upon our receipt of promote distributions from CTOPI or the disposition of certain investments owned by CTOPI.
Payment under equity method investment	$ 11.2
Acceleration Event [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of grants vesting upon receipt of dividends	31.00%	31.00%
Incentive Management Fees [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of grants vesting upon receipt of dividends	4.00%	4.00%

The percentage of granted CTOPI incentive compensation to employees.

No definition available.

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- Definition

Amount of incentive allocation recognized from CTOPI under the equity method of accounting, which has not been received and will not be recognized into income until the appropriate contingencies have been eliminated.

+ References

No definition available.

+ Details

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- Definition

The percentage of fund's profits that may be earned as incentive compensation after a preferred return and return of capital to investors.

+ References

No definition available.

+ Details

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- Definition

The percentage of grants that follow employment-based vesting schedule as described.

+ References

No definition available.

+ Details

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- Definition

The percentage of grants that vest upon receipt of dividends.

+ References

No definition available.

+ Details

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- Definition

The percentage of incentive management fees pooled for employee grants.

+ References

No definition available.

+ Details

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- Definition

The preferred return percentage that must be paid to investors before incentive compensation can be earned.

+ References

No definition available.

+ Details

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- Definition

The percentage of capital that must be returned to investors before incentive compensation can be earned.

+ References

No definition available.

+ Details

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- Definition

Description of the deferred compensation arrangement, including fixed amounts and determinable awards, or the method for determining payments and awards, the timing of such payments and awards, and any requisite service or performance criteria, as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 710

-SubTopic 10

-Section 55

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367

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- Definition

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13

-Article 5

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- Definition

Amount paid for incentive rights held by the managing member or general partner, of limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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