Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock issued for employee stock purchase plan, shares (in shares)	59,475	60,697	43,681
Stock issued for compensation plans, shares (in shares)	429,423	474,970	362,080
Stock repurchased (in shares)	4,432,762	4,562,469	5,956,700
Cash dividends, per share (in dollars per share)	$ 0.76	$ 0.72	$ 0.68
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