| Cover | Dec. 16, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 16, 2021 |
| Entity File Number | 001-39687 |
| Entity Registrant Name | Roman DBDR Tech Acquisition Corp. |
| Entity Central Index Key | 0001823144 |
| Entity Tax Identification Number | 85-2749902 |
| Entity Incorporation, State or Country Code | DE |
| 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 |
| City Area Code | 650 |
| Local Phone Number | 618-2524 |
| Written Communications | false |
| Soliciting Material | true |
| 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 |
| Units, each consisting of one share of Class A Common Stock and one-half of one Redeemable Warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one share of Class A Common Stock and one-half of one Redeemable Warrant |
| Trading Symbol | DBDRU |
| Security Exchange Name | NASDAQ |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Common Stock, par value $0.0001 per share |
| Trading Symbol | DBDR |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share |
| Trading Symbol | DBDRW |
| Security Exchange Name | NASDAQ |
