Acquisitions and Dispositions - Carrying Value and Fair Value of Company's Class B Interest and Resulting Gain on Remeasurement (Detail) (USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2013
Business Acquisition [Line Items]
Gain on remeasurement of equity method investment	$ 10,945,000	$ 10,945,000
RJ LLC [Member]
Business Acquisition [Line Items]
Fair value of existing Class B interest		7,615,000
Carrying value of Class B interest		(3,330,000)
Gain on remeasurement of equity method investment		$ 10,945,000

Business Combination Acquisition Equity Interest Carrying Value

No definition available.

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- Details

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- Definition

Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)(1)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

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- Definition

In a business combination achieved in stages, this element represents the amount of net gain (loss) recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)(2)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

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