Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock issued for employee stock purchase plan, shares (in shares)	42,510	59,475	60,697
Stock issued for compensation plans, shares (in shares)	352,004	429,423	474,970
Stock repurchased (in shares)	2,257,049	4,432,762	4,562,469
Cash dividends, per share (in dollars per share)	$ 0.80	$ 0.76	$ 0.72
Landmark Bank
Stock issued for acquisition, shares (in shares)			4,499,872
Triumph
Stock issued for acquisition, shares (in shares)			4,164,712
Spirit
Stock issued for acquisition, shares (in shares)		18,275,074