CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Gross revenues:
Rental	$ 364,731	$ 359,832	$ 398,065
Tenant reimbursements	30,608	31,809	31,431
Total gross revenues	395,339	391,641	429,496
Expense applicable to revenues:
Depreciation and amortization	(168,191)	(173,968)	(166,048)
General and administrative	(31,662)	(34,158)	(31,104)
Litigation settlement	0	(2,050)	0
Non-operating income	3,491	10,378	13,043
Interest and amortization expense	(79,880)	(77,883)	(88,032)
Debt satisfaction gains (charges), net	(2,596)	6,196	(975)
Impairment charges and loan losses	(95,813)	(44,996)	(100,236)
Gains on sales of properties	252,913	63,428	81,510
Income (loss) before provision for income taxes and equity in earnings of non-consolidated entities	230,926	89,394	90,299
Provision for income taxes	(1,728)	(1,917)	(1,439)
Equity in earnings (losses) of non-consolidated entities	1,708	(848)	7,590
Income (loss) from continuing operations	230,906	86,629	96,450
Less net income attributable to noncontrolling interests	(3,491)	(1,046)	(826)
Net income attributable to Lexington Realty Trust shareholders	227,415	85,583	95,624
Dividends attributable to preferred shares	(6,290)	(6,290)	(6,290)
Allocation to participating securities	(287)	(226)	(225)
Net income attributable to common shareholders	$ 220,838	$ 79,067	$ 89,109
Net income attributable to common shareholders - basic (usd per share)	$ 0.93	$ 0.33	$ 0.38
Weighted-average common shares outstanding - basic (in shares)	236,666,375	237,758,408	233,633,058
Net income attributable to common shareholders - diluted (usd per share)	$ 0.93	$ 0.33	$ 0.37
Weighted-average common shares outstanding - diluted (in shares)	240,810,990	241,537,837	237,679,031
Real Estate [Member]
Expense applicable to revenues:
Property operating	$ (42,675)	$ (49,194)	$ (47,355)