Document and Entity Information - shares	9 Months Ended
	Dec. 01, 2018	Jan. 09, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	APOGEE ENTERPRISES, INC.
Entity Central Index Key	0000006845
Document Type	10-Q
Document Period End Date	Dec. 01, 2018
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--03-02
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		27,175,800
Entity Emerging Growth Company	false
Entity Small Business	false