Cover - shares	3 Months Ended
	Mar. 31, 2025	May 12, 2025
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2025
Document Transition Report	false
Entity File Number	0-23636
Entity Registrant Name	HAWTHORN BANCSHARES, INC.
Entity Incorporation, State or Country Code	MO
Entity Tax Identification Number	43-1626350
Entity Address, Address Line One	132 East High Street, Box 688
Entity Address, City or Town	Jefferson City
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	65102
City Area Code	573
Local Phone Number	761-6100
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	HWBK
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		6,946,656
Current Fiscal Year End Date	--12-31
Document Fiscal Period	Q1
Document Fiscal Year Focus	2025
Entity Central Index Key	0000893847
Amendment Flag	false