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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 32,308	$ 13,720	$ 9,306
Other comprehensive (loss)
Net unrealized gain (loss) on available-for-sale securities	11	66	(60)
Net unrealized (loss) on derivative instruments	(547)	(747)	(287)
One Liberty Property's share of joint venture net unrealized (loss) on derivative instruments	(23)	(182)
Other comprehensive (loss)	(559)	(863)	(347)
Comprehensive income	31,749	12,857	8,959
Plus: comprehensive loss attributable to non-controlling interests	12	4
Comprehensive income attributable to One Liberty Properties, Inc.	$ 31,761	$ 12,861	$ 8,959

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This element represents the change in accumulated gains and losses from derivative instrument related to share of joint venture, designated and qualifying as the effective portion of cash flow hedges, net of tax effect. The after tax effect change includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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