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Equity and Other Investments - Additional information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended		1 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2012 Scarborough	Jul. 31, 2012 TRA Investment
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage			49.50%
Sale of investment				$ 1,703
Proceeds from sale of investment	1,466	1,466
Receivable from sale of investment	$ 214	$ 214

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

The cash inflow associated with the sale and maturity (principal being due) of other investments, prepayment and call (request of early payment) of other investments not otherwise defined in the taxonomy.

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