XML 14 R1.htm IDEA: XBRL DOCUMENT v3.19.1
Document and Entity Information - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2018
Feb. 28, 2019
Jun. 30, 2018
Document And Entity Information      
Entity Registrant Name CHOICEONE FINANCIAL SERVICES INC    
Entity Central Index Key 0000803164    
Document Type 10-K    
Trading Symbol COFS    
Document Period End Date Dec. 31, 2018    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filer No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Smaller Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 87,200,000
Share price     $ 26.25
Entity Common Stock, Shares Outstanding   3,617,629  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2018