Business Combinations - Unaudited Pro Forma Financial Information (Details) - Heartland BancCorp - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Business Combination [Line Items]
Net Interest Income	$ 75,725	$ 72,553	$ 221,871	$ 207,812
Non-interest Income	18,429	16,523	50,830	56,001
Total Revenue	94,154	89,076	272,701	263,813
Provision for Loan Losses Expense	700	1,219	984	1,476
Non-interest Expense	49,564	46,307	148,885	145,488
Income Before Income Taxes	43,890	41,550	122,832	116,849
Income Tax Expense	8,714	8,525	25,868	25,051
Net Income	$ 35,176	$ 33,025	$ 96,964	$ 91,798
Earnings Per Share (in dollars per share)	$ 0.94	$ 0.88	$ 2.59	$ 2.46
Diluted Earnings Per Share (in dollars per share)	$ 0.94	$ 0.88	$ 2.59	$ 2.46