CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 19,131	$ 23,769	$ 37,551	$ 52,049
Other comprehensive income (loss):
Change in unrealized loss on interest rate swaps, net	(1,806)	0	(18,802)	(76)
Other comprehensive loss	(1,806)	0	(18,802)	(76)
Comprehensive income	17,325	23,769	18,749	51,973
Comprehensive income attributable to noncontrolling interests	(265)	(436)	(531)	(689)
Comprehensive income attributable to Lexington Realty Trust shareholders	$ 17,060	$ 23,333	$ 18,218	$ 51,284