Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 15, 2015
Document Information [Line Items]
Entity Registrant Name	RAMCO GERSHENSON PROPERTIES TRUST
Entity Central Index Key	0000842183
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	RPT
Entity Common Stock, Shares Outstanding		79,148,366