CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Gross revenues:
Rental	$ 87,565	$ 108,982	$ 176,219	$ 212,202
Tenant reimbursements	8,119	7,930	15,564	15,987
Total gross revenues	95,684	116,912	191,783	228,189
Expense applicable to revenues:
Depreciation and amortization	(42,320)	(41,272)	(85,211)	(84,399)
Property operating	(12,974)	(11,293)	(25,090)	(23,371)
General and administrative	(8,141)	(7,747)	(17,598)	(15,522)
Non-operating income	1,371	3,553	3,992	6,420
Interest and amortization expense	(19,216)	(22,679)	(38,941)	(45,572)
Debt satisfaction charges, net	(46)	(3,194)	(46)	(3,356)
Impairment charges and loan loss	(13,599)	(3,014)	(21,591)	(3,014)
Gains on sales of properties	10,240	25,326	44,433	42,341
Income before provision for income taxes and equity in earnings (losses) of non-consolidated entities.	10,999	56,592	51,731	101,716
Provision for income taxes	(377)	(224)	(799)	(637)
Equity in earnings (losses) of non-consolidated entities	(3,257)	312	(1,347)	6,054
Net income	7,365	56,680	49,585	107,133
Less net income attributable to noncontrolling interests	(213)	(1,148)	(393)	(2,158)
Net income attributable to Lexington Realty Trust shareholders	7,152	55,532	49,192	104,975
Allocation to participating securities	(60)	(84)	(131)	(175)
Net income attributable to common shareholders	$ 5,519	$ 53,875	$ 45,916	$ 101,655
Net income attributable to common shareholders - per common share basic (in dollars per share)	$ 0.02	$ 0.23	$ 0.19	$ 0.44
Weighted-average common shares outstanding – basic (in shares)	237,720,198	232,592,998	237,451,355	232,617,901
Net income attributable to common shareholders – per common share diluted (in dollars per share)	$ 0.02	$ 0.23	$ 0.19	$ 0.43
Weighted-average common shares outstanding – diluted (in shares)	241,531,313	235,227,199	241,310,529	235,151,256
Series C [Member]
Expense applicable to revenues:
Dividends attributable to preferred shares – Series C	$ (1,573)	$ (1,573)	$ (3,145)	$ (3,145)
LCIF [Member]
Gross revenues:
Rental	18,691	38,557	35,999	70,152
Tenant reimbursements	1,955	2,215	3,928	4,720
Total gross revenues	20,646	40,772	39,927	74,872
Expense applicable to revenues:
Depreciation and amortization	(9,209)	(8,171)	(18,381)	(17,609)
Property operating	(3,042)	(3,506)	(6,599)	(7,708)
General and administrative	(1,853)	(2,396)	(3,292)	(4,469)
Non-operating income	3	255	232	255
Interest and amortization expense	(3,932)	(8,410)	(7,339)	(16,726)
Debt satisfaction charges, net	0	(1,615)	0	(1,615)
Impairment charges and loan loss	(2,762)	(2,426)	(5,259)	(2,426)
Gains on sales of properties	0	8,190	0	16,029
Income before provision for income taxes and equity in earnings (losses) of non-consolidated entities.	(149)	22,693	(711)	40,603
Provision for income taxes	(18)	(6)	(26)	(25)
Equity in earnings (losses) of non-consolidated entities	159	67	259	203
Net income	$ (8)	$ 22,754	$ (478)	$ 40,781
Net income (loss) per unit (in dollars per unit)	$ 0.00	$ 0.27	$ (0.01)	$ 0.49
Weighted-average units outstanding (in units)	83,241,396	83,241,396	83,241,396	83,241,396