Document and Entity Information - shares	6 Months Ended
	Sep. 02, 2017	Oct. 11, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	APOGEE ENTERPRISES, INC.
Entity Central Index Key	0000006845
Document Type	10-Q
Document Period End Date	Sep. 02, 2017
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--03-03
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		28,642,749