CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 7,365	$ 56,680	$ 49,585	$ 107,133
Other comprehensive income (loss):
Change in unrealized gain (loss) on interest rate swaps, net	184	(956)	1,476	(5,581)
Other comprehensive income (loss)	184	(956)	1,476	(5,581)
Comprehensive income	7,549	55,724	51,061	101,552
Comprehensive income attributable to noncontrolling interests	(213)	(1,148)	(393)	(2,158)
Comprehensive income attributable to Lexington Realty Trust shareholders	$ 7,336	$ 54,576	$ 50,668	$ 99,394