CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Gross revenues:
Rental	$ 94,522	$ 88,654
Tenant reimbursements	8,115	7,445
Total gross revenues	102,637	96,099
Expense applicable to revenues:
Depreciation and amortization	(46,537)	(42,891)
Property operating	(11,477)	(12,116)
General and administrative	(8,996)	(9,457)
Non-operating income	546	2,621
Interest and amortization expense	(20,331)	(19,725)
Impairment charges and loan loss	(53,049)	(7,992)
Gains on sales of properties	22,774	34,193
Income (loss) before provision for income taxes and equity in earnings of non-consolidated entities	(14,433)	40,732
Provision for income taxes	(503)	(422)
Equity in earnings of non-consolidated entities	113	1,910
Net income (loss)	(14,823)	42,220
Less net (income) loss attributable to noncontrolling interests	508	(180)
Net income (loss) attributable to Lexington Realty Trust shareholders	(14,315)	42,040
Allocation to participating securities	(70)	(71)
Net income (loss) attributable to common shareholders	$ (15,957)	$ 40,397
Net income (loss) attributable to common shareholders - per common share basic (in dollars per share)	$ (0.07)	$ 0.17
Weighted-average common shares outstanding – basic (in shares)	238,072,081	237,179,526
Net income (loss) attributable to common shareholders – per common share diluted (in dollars per share)	$ (0.07)	$ 0.17
Weighted-average common shares outstanding – diluted (in shares)	238,072,081	241,088,049
Series C [Member]
Expense applicable to revenues:
Dividends attributable to preferred shares – Series C	$ (1,572)	$ (1,572)
LCIF [Member]
Gross revenues:
Rental	19,943	17,308
Tenant reimbursements	2,164	1,973
Total gross revenues	22,107	19,281
Expense applicable to revenues:
Depreciation and amortization	(8,872)	(9,172)
Property operating	(3,114)	(3,557)
General and administrative	(1,785)	(1,439)
Non-operating income	2	229
Interest and amortization expense	(5,012)	(3,407)
Impairment charges and loan loss	(22,730)	(2,497)
Gains on sales of properties	930	0
Income (loss) before provision for income taxes and equity in earnings of non-consolidated entities	(18,474)	(562)
Provision for income taxes	(12)	(8)
Equity in earnings of non-consolidated entities	252	100
Net income (loss)	$ (18,234)	$ (470)
Net income (loss) per unit (in dollars per unit)	$ (0.23)	$ (0.01)
Weighted-average units outstanding (in units)	80,565,611	83,241,396