Investment Securities - Schedule of Amortized Costs, Gains and Losses, Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	$ 251,303	$ 249,558
Gross unrealized gains	861	126
Gross unrealized losses	(30,428)	(31,032)
Fair Value	221,736	218,652
U.S. Treasury
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	4,943	4,937
Gross unrealized gains	104	0
Gross unrealized losses	0	(22)
Fair Value	5,047	4,915
U.S. government and federal agency obligations
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	381	408
Gross unrealized gains	0	0
Gross unrealized losses	(2)	(7)
Fair Value	379	401
U.S. government-sponsored enterprises
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	13,010	13,020
Gross unrealized gains	30	11
Gross unrealized losses	(161)	(227)
Fair Value	12,879	12,804
Obligations of states and political subdivisions
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	121,902	125,559
Gross unrealized gains	0	7
Gross unrealized losses	(24,515)	(23,080)
Fair Value	97,387	102,486
Residential
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	66,012	68,346
Gross unrealized gains	543	59
Gross unrealized losses	(2,757)	(4,034)
Fair Value	63,798	64,371
Commercial
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	15,715	16,383
Gross unrealized gains	13	0
Gross unrealized losses	(2,201)	(2,644)
Fair Value	13,527	13,739
Other debt securities
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	27,854	19,419
Gross unrealized gains	171	49
Gross unrealized losses	(585)	(781)
Fair Value	27,440	18,687
Bank issued trust preferred securities
Amortized cost, gross urealized gains and losses, and fair value of debt securities classified as available-for-sale
Total Amortized Cost	1,486	1,486
Gross unrealized gains	0	0
Gross unrealized losses	(207)	(237)
Fair Value	$ 1,279	$ 1,249

HAWTHORN BANCSHARES, INC. 10-Q