Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	2
Segment Reporting Information [Line Items]
Interest income	$ 23,458	$ 24,052
Interest expense	8,164	9,304
Net interest income	15,294	14,748
Provision for credit losses	(340)	(230)
Operating expenses
Salaries and employee benefits	6,912	6,730
Occupancy, furniture and equipment expense	1,193	1,106
Processing, network, and bank card expense	1,401	1,370
Legal, examination, and professional fees	493	823
Depreciation	535	463
Other	1,965	2,083
Total expenses	12,499	12,575
Other
Non-interest income	3,463	3,019
Investment securities losses, net	(2)	0
Income taxes	1,213	966
Net income	5,383	4,456
Segment assets	1,883,423	1,883,423
Non-Bank
Segment Reporting Information [Line Items]
Interest income	26	30
Interest expense	852	989
Net interest income	(826)	(959)
Provision for credit losses	0	0
Operating expenses
Salaries and employee benefits	359	338
Occupancy, furniture and equipment expense	0	0
Processing, network, and bank card expense	0	450
Legal, examination, and professional fees	97	200
Depreciation	0	0
Other	211	(347)
Total expenses	667	641
Other
Non-interest income	360	286
Investment securities losses, net	0	0
Income taxes	(237)	(276)
Net income	(896)	(1,038)
Segment assets	12,138	57,572
Hawthorn Bank | Operating Segments
Segment Reporting Information [Line Items]
Interest income	23,432	24,022
Interest expense	7,312	8,315
Net interest income	16,120	15,707
Provision for credit losses	(340)	(230)
Operating expenses
Salaries and employee benefits	6,397	6,392
Occupancy, furniture and equipment expense	1,178	1,106
Processing, network, and bank card expense	1,383	920
Legal, examination, and professional fees	396	623
Depreciation	535	463
Other	1,739	2,430
Total expenses	11,628	11,934
Other
Non-interest income	2,591	2,733
Investment securities losses, net	(2)	0
Income taxes	1,450	1,242
Net income	5,971	5,494
Segment assets	1,871,281	$ 1,825,851
Wealth Management | Operating Segments
Segment Reporting Information [Line Items]
Interest income	0
Interest expense	0
Net interest income	0
Provision for credit losses	0
Operating expenses
Salaries and employee benefits	156
Occupancy, furniture and equipment expense	15
Processing, network, and bank card expense	18
Legal, examination, and professional fees	0
Depreciation	0
Other	15
Total expenses	204
Other
Non-interest income	512
Investment securities losses, net	0
Income taxes	0
Net income	308
Segment assets	$ 4