XML 19 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information
 12 Months Ended
Dec. 31, 2017
shares
Document And Entity Information  
Entity Registrant Name DENISON MINES CORP.
Entity Central Index Key 0001063259
Document Type 6-K
Document Period End Date Dec. 31, 2017
Amendment Flag false
Current Fiscal Year End Date --12-31
Is Entity a Well-known Seasoned Issuer? No
Is Entity a Voluntary Filer? No
Is Entity's Reporting Status Current? No
Entity Filer Category Non-accelerated Filer
Entity Common Stock, Shares Outstanding 559,183,209
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2017