Document and Entity Information	3 Months Ended
	Apr. 30, 2012	Jun. 01, 2012
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2012
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Trading Symbol	SEAC
Entity Registrant Name	SEACHANGE INTERNATIONAL INC
Entity Central Index Key	0001019671
Current Fiscal Year End Date	--01-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		32,818,087