CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 23,769	$ (795)	$ 52,049	$ (15,618)
Other comprehensive income (loss):
Change in unrealized gain (loss) on interest rate swaps, net	0	(213)	(76)	33
Other comprehensive income (loss)	0	(213)	(76)	33
Comprehensive income (loss)	23,769	(1,008)	51,973	(15,585)
Comprehensive (income) attributable to noncontrolling interests	(436)	(899)	(689)	(391)
Comprehensive income (loss) attributable to Lexington Realty Trust shareholders	$ 23,333	$ (1,907)	$ 51,284	$ (15,976)