| Cover | Dec. 27, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | On December 29, 2021, CompoSecure, Inc. (formerly known as Roman DBDR Tech Acquisition Corp.) filed a Current Report on Form 8-K (the “Original Report”) to report the closing of its business combination among Roman DBDR Tech Acquisition Corp., Roman Parent Merger Sub, LLC, and CompoSecure Holdings, L.L.C., and related matters under Items 1.01, 2.01, 2.03, 3.02, 5.01, 5.02, 5.06, and 9.01 of Form 8-K. Due to the large number of events to be reported under the specified items of Form 8-K, this Form 8-K/A is being filed to amend the Original Report to include additional matters related to the closing of the business combination under Items 3.03, 4.01, 5.03 and 5.05 of Form 8-K and all information and exhibits included in the Original Report continue to apply, as supplemented by this Current Report on Form 8-K. Interested parties should refer to the Original Report for more information about the business combination. Capitalized terms used herein and not otherwise defined have the meaning set forth in the Original Report. |
| Document Period End Date | Dec. 27, 2021 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-39687 |
| Entity Registrant Name | CompoSecure, Inc. |
| Entity Central Index Key | 0001823144 |
| Entity Tax Identification Number | 85-2749902 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 309 Pierce Street |
| Entity Address, City or Town | Somerset |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 08873 |
| City Area Code | 908 |
| Local Phone Number | 518-0500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Entity Information, Former Legal or Registered Name | Roman DBDR Tech Acquisition Corp. |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Common Stock, $0.0001 par value per share |
| Trading Symbol | CMPO |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each whole warrant exercisable for one share of Class A Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, each whole warrant exercisable for one share of Class A Common Stock |
| Trading Symbol | CMPOW |
| Security Exchange Name | NASDAQ |
| Former Address [Member] | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | 2877 Paradise Rd. #702 |
| Entity Address, City or Town | Las Vegas |
| Entity Address, State or Province | NV |
| Entity Address, Postal Zip Code | 89109 |
