ORGANIZATION AND BASIS OF PRESENTATION (Details)	12 Months Ended
	Dec. 31, 2018 segment
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of reportable segment	1
Omega OP
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of limited partnership interests owned	96.00%
Other Investors | Omega OP
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of limited partnership interests owned	4.00%