Cover Page - shares	3 Months Ended
	Mar. 31, 2020	May 01, 2020
Document Information [Line Items]
Entity Registrant Name	GREENLIGHT CAPITAL RE, LTD.
Entity Central Index Key	0001385613
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		30,886,544
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		6,254,715