| Document and Entity Information | Sep. 30, 2020 |
| Document and Entity Information [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | Sep. 30, 2020 |
| Entity Registrant Name | CENTURY CASINOS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 0-22900 |
| Entity Tax Identification Number | 84-1271317 |
| Entity Address, Address Line One | 455 E. Pikes Peak Ave. |
| Entity Address, Address Line Two | Suite 210 |
| Entity Address, City or Town | Colorado Springs |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80903 |
| City Area Code | 719 |
| Local Phone Number | 527-8300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 Per Share Par Value |
| Trading Symbol | CNTY |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000911147 |
| Amendment Flag | true |
| Amendment Description | This Amendment (the “Amendment”) amends the Current Report on Form 8-K filed by Century Casinos, Inc. (the “Company”) on October 6, 2020 (the “Original Report”). The sole purpose of the Amendment is to refile Exhibit 10.1 to the Original Report to correct formatting errors in Exhibit A of Exhibit 10.1. No substantive revisions have been made to the Original Report or the exhibits filed therewith. |
