Cover Page
| Cover Page | Feb. 01, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | Feb. 01, 2023 |
| Entity Registrant Name | ADVANCED EMISSIONS SOLUTIONS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-37822 |
| Entity Tax Identification Number | 27-5472457 |
| Entity Address, Address Line One | 8051 E Maplewood Ave |
| Entity Address, Address Line Two | Suite 210 |
| Entity Address, City or Town | Greenwood Village |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80111 |
| City Area Code | 720 |
| Local Phone Number | 598-3500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.001 per share |
| Trading Symbol | ADES |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001515156 |
| Amendment Flag | true |
| Amendment Description | This Current Report on Form 8-K/A filed by Advanced Emissions Solutions, Inc. ("ADES" or the "Company") amends Item 9.01 of the Current Report on Form 8-K filed by the Company on February 1, 2023 (the "Report") to include the audited and unaudited financial statements required by Item 9.01(a) and the pro forma financial information required by Item 9.01(b) of Form 8-K as required for the Company's acquisition all of the direct and indirect equity interests of Arq Limited, a company incorporated under the laws of Jersey ("Arq") on February 1, 2023, which was previously reported in the Report. |