DEI Document - shares	9 Months Ended
	Sep. 30, 2016	Oct. 26, 2016	Dec. 31, 2015
DEI [Abstract]
Common Stock, Shares, Issued	38,441,000		37,026,000
Entity Registrant Name	Radisys Corporation
Entity Central Index Key	0000873044
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		38,440,805
Common Stock, Shares, Outstanding	38,441,000		37,026,000