| Document And Entity Information | Jan. 29, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | ChoiceOne Financial Services, Inc. |
| Document, Type | 8-K |
| Document, Period End Date | Jan. 29, 2021 |
| Entity, Incorporation, State or Country Code | MI |
| Entity, File Number | 000-19202 |
| Entity, Tax Identification Number | 38-2659066 |
| Entity, Address, Address Line One | 109 E. Division Street |
| Entity, Address, City or Town | Sparta |
| Entity, Address, State or Province | MI |
| Entity, Address, Postal Zip Code | 49345 |
| City Area Code | 616 |
| Local Phone Number | 887-7366 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock |
| Trading Symbol | COFS |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000803164 |
