XML 18 R1.htm IDEA: XBRL DOCUMENT v3.3.1.900
Document and Entity Information - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Feb. 29, 2016
Jun. 30, 2015
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, 2015    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity a Well-known Seasoned Issuer No    
Entity a Voluntary Filer No    
Entity's Reporting Status Current Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 68,000
Entity Common Stock, Shares Outstanding   3,296,443  
Average bid price     $ 23.03
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2015