DEI Document - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
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	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		39,045,215
Common Stock, Shares, Outstanding			38,441,000	37,026,000