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Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ (6,727)	$ (106,195)	$ (82,659)
Other comprehensive loss
Unrealized loss on foreign currency translation		(786)
Unrealized loss on investment securities			(2,575)
Total other comprehensive loss		(786)	(2,575)
Comprehensive income (loss)	(6,727)	(106,981)	(85,234)
Comprehensive loss attributable to non-controlling interest	7,017	11,448	12,518
Comprehensive income (loss) attributable to American Realty Investors, Inc.	$ 290	$ (95,533)	$ (72,716)

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