| Document and Entity Information | May 12, 2021 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | COMPUTER PROGRAMS & SYSTEMS INC |
| Amendment Flag | false |
| Entity Central Index Key | 0001169445 |
| Document Type | 8-K |
| Document Period End Date | May 12, 2021 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 000-49796 |
| Entity Tax Identification Number | 74-3032373 |
| Entity Address, Address Line One | 54 St. Emanuel Street |
| Entity Address, City or Town | Mobile |
| Entity Address, State or Province | AL |
| City Area Code | (251) |
| Local Phone Number | 639-8100 |
| Entity Address, Postal Zip Code | 36695 |
| Security 12b Title | Common Stock, par value $.001 per share |
| Trading Symbol | CPSI |
| Security Exchange Name | NASDAQ |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Former Address [Member] | |
| Document And Entity Information [Line Items] | |
| Entity Address, Address Line One | 6600 Wall Street |
| Entity Address, State or Province | AL |
| Entity Address, Postal Zip Code | 36695 |
