XML 11 R1.htm IDEA: XBRL DOCUMENT v3.3.1.900
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2015
Apr. 14, 2016
Document and Entity Information [Abstract]    
Entity Registrant Name Advanced Emissions Solutions, Inc.  
Entity Central Index Key 0001515156  
Document Type 10-Q  
Document Period End Date Sep. 30, 2015  
Amendment Flag false  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   22,011,494