| Document and Entity Information | Feb. 08, 2021 |
| Document and Entity Information [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Feb. 8, 2021 |
| Entity File Number | 000-26966 |
| Entity Registrant Name | Advanced Energy Industries, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 84-0846841 |
| Entity Address, Address Line One | 1595 Wynkoop Street, Suite 800 |
| Entity Address, State or Province | CO |
| Entity Address, City or Town | Denver |
| Entity Address, Postal Zip Code | 80202 |
| City Area Code | (970) |
| Local Phone Number | 407-6626 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value |
| Trading Symbol | AEIS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000927003 |
| Amendment Flag | false |
