CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue
Rental income	$ 804,076	$ 767,340	$ 775,176
Income from direct financing leases	1,036	1,636	32,336
Mortgage interest income	76,542	70,312	66,202
Other investment income	43,400	40,228	29,225
Miscellaneous income	3,776	2,166	5,446
Total operating revenues	928,830	881,682	908,385
Expenses
Depreciation and amortization	301,683	281,279	287,591
General and administrative	57,869	63,508	47,683
Real estate taxes	14,933
Acquisition and merger related costs	5,115	383
Impairment on real estate properties	45,264	29,839	99,070
Impairment on direct financing leases	7,917	27,168	198,199
Provision for uncollectible accounts		6,689	14,580
Total operating expenses	432,781	408,866	647,123
Other operating income (loss)
Gain on assets sold - net	55,696	24,774	53,912
Operating income	551,745	497,590	315,174
Other operating (loss) income
Interest income and other - net	856	313	267
Interest expense	(199,151)	(192,462)	(188,762)
Interest - amortization of deferred financing costs	(9,564)	(8,960)	(9,516)
Interest - refinancing costs			(21,965)
Contractual settlement			10,412
Realized (loss) gain on foreign exchange	(42)	32	311
Interest and Other Income, Total	(207,901)	(201,077)	(209,253)
Income tax expense	(2,844)	(3,010)	(3,248)
Income from continuing operations	343,844	296,513	105,921
Income from unconsolidated joint ventures	10,947	381	2,237
Net income	351,947	293,884	104,910
Net income attributable to noncontrolling interest	(10,824)	(12,306)	(4,491)
Net income available to common stockholders/owners	$ 341,123	$ 281,578	$ 100,419
Basic:
Net income available to common stockholders	$ 1.60	$ 1.41	$ 0.51
Diluted:
Net income	$ 1.58	$ 1.40	$ 0.51
Weighted-average shares outstanding, Basic and Diluted
Weighted-average shares outstanding, basic (in shares)	213,404	200,279	197,738
Weighted-average shares outstanding, diluted (in shares)	222,125	209,711	206,790
Omega OP
Revenue
Rental income	$ 804,076	$ 767,340	$ 775,176
Income from direct financing leases	1,036	1,636	32,336
Mortgage interest income	76,542	70,312	66,202
Other investment income	43,400	40,228	29,225
Miscellaneous income	3,776	2,166	5,446
Total operating revenues	928,830	881,682	908,385
Expenses
Depreciation and amortization	301,683	281,279	287,591
General and administrative	57,869	63,508	47,683
Real estate taxes	14,933
Acquisition and merger related costs	5,115	383
Impairment on real estate properties	45,264	29,839	99,070
Impairment on direct financing leases	7,917	27,168	198,199
Provision for uncollectible accounts		6,689	14,580
Total operating expenses	432,781	408,866	647,123
Other operating income (loss)
Gain on assets sold - net	55,696	24,774	53,912
Operating income	551,745	497,590	315,174
Other operating (loss) income
Interest income and other - net	856	313	267
Interest expense	(199,151)	(192,462)	(188,762)
Interest - amortization of deferred financing costs	(9,564)	(8,960)	(9,516)
Interest - refinancing costs			(21,965)
Contractual settlement			10,412
Realized (loss) gain on foreign exchange	(42)	32	311
Interest and Other Income, Total	(207,901)	(201,077)	(209,253)
Income tax expense	(2,844)	(3,010)	(3,248)
Income from continuing operations	343,844	296,513	105,921
Income from unconsolidated joint ventures	10,947	381	2,237
Net income	351,947	293,884	104,910
Net income attributable to noncontrolling interest	12
Net income available to common stockholders/owners	$ 351,959	$ 293,884	$ 104,910
Net income (loss) available to Omega OP Unit holders:
Net income available to owners'	$ 1.60	$ 1.41	$ 0.51
Diluted:
Net income	$ 1.58	$ 1.40	$ 0.51
Weighted-average shares outstanding, Basic and Diluted
Weighted-average shares outstanding, basic (in shares)	220,193	209,020	206,521
Weighted-average shares outstanding, diluted (in shares)	222,125	209,711	206,790
Weighted-average Omega OP Units outstanding, basic (in shares)	220,193	209,020	206,521
Weighted-average Omega OP Units outstanding, diluted (in shares)	222,125	209,711	206,790