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Noncontrolled Entities - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Redeemable Noncontrolling Interest [Line Items]
Income from equity method investments	$ 210,000	$ 261,000	$ 309,000
Bermuda Crossroads
Redeemable Noncontrolling Interest [Line Items]
Income from equity method investments			200,000
Smith's Landing
Redeemable Noncontrolling Interest [Line Items]
Income from equity method investments		200,000	100,000
Equity method investment		$ (700,000)

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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