Document and Entity Information
3 Months Ended
Mar. 31, 2014
May 01, 2014
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2014  
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus Q1  
Entity Registrant Name CSB BANCORP INC /OH  
Entity Central Index Key 0000880417  
Current Fiscal Year End Date --12-31  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   2,737,085