| Document and Entity Information | Nov. 06, 2020 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0000006845 |
| Document Type | 8-K |
| Document Period End Date | Nov. 6, 2020 |
| Entity Registrant Name | APOGEE ENTERPRISES, INC. |
| Entity Incorporation State Country Code | MN |
| Entity File Number | 0-6365 |
| Entity Tax Identification Number | 41-0919654 |
| Entity Address, Address Line One | 4400 West 78th Street - Suite 520 |
| Entity Address, Address Line Two | 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.33 1/3 Par Value |
| Trading Symbol | APOG |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
