v3.19.3.a.u2
Cover Page - shares
9 Months Ended
Nov. 30, 2019
Jan. 07, 2020
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Nov. 30, 2019  
Document Transition Report false  
Entity File Number 0-6365  
Entity Registrant Name APOGEE ENTERPRISES, INC.  
Entity Incorporation, State or Country Code MN  
Entity Tax Identification Number 41-0919654  
Entity Address, Address Line One 4400 West 78th Street, Suite 520  
Entity Address, City or Town Minneapolis  
Entity Address, State or Province MN  
Entity Address, Postal Zip Code 55435  
City Area Code 952  
Local Phone Number 835-1874  
Title of 12(b) Security Common stock, par value $0.33 1/3 per share  
Trading Symbol APOG  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   26,507,935
Entity Central Index Key 0000006845  
Amendment Flag false  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --02-29