| Document and Entity Information | Jul. 22, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jul. 22, 2021 |
| Entity Registrant Name | MACATAWA BANK CORP |
| Entity Incorporation, State or Country Code | MI |
| Entity File Number | 000-25927 |
| Entity Tax Identification Number | 38-3391345 |
| Entity Address, Address Line One | 10753 MACATAWA DRIVE |
| Entity Address, City or Town | HOLLAND |
| Entity Address, State or Province | MI |
| Entity Address, Postal Zip Code | 49424 |
| City Area Code | 616 |
| Local Phone Number | 820-1444 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001053584 |
| Title of 12(b) Security | Common stock |
| Trading Symbol | MCBC |
| Security Exchange Name | NASDAQ |
