CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 7,832	$ 5,626	$ 5,709	$ 11,104
Other comprehensive income (loss):
Change in unrealized gain (loss) on interest rate swaps, net	9,434	(5,503)	10,136	(5,559)
Other comprehensive income (loss)	9,434	(5,503)	10,136	(5,559)
Comprehensive income	17,266	123	15,845	5,545
Comprehensive income attributable to noncontrolling interests	(1,100)	(1,116)	(1,597)	(2,983)
Comprehensive income (loss) attributable to Lexington Realty Trust shareholders	$ 16,166	$ (993)	$ 14,248	$ 2,562