XML 17 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2017
Mar. 07, 2018
Jun. 30, 2017
Document And Entity Information Abstract      
Entity Registrant Name HAWTHORN BANCSHARES, INC.    
Entity Central Index Key 0000893847    
Trading Symbol hwbk    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Common Stock, Shares Outstanding   5,798,009  
Entity Public Float     $ 85,964,049
Document Type 10-K    
Document Period End Date Dec. 31, 2017    
Amendment Flag false    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY