Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Cash dividends declared, per share (in dollars per share)	$ 1	$ 0.75	$ 1.75	$ 1.5
Issuance of shares of common stock pursuant to dividend reinvestment plan, shares (in shares)	113,909	91,623	203,489	188,396
Issuance of shares of common stock, shares (in shares)	290	4,944	3,387	14,611
Vesting of performance stock units (in shares)			369
Vesting of restricted stock units (in shares)			2,725
Repurchase of common shares (in shares)			30,187
Net change in fair value of available-for-sale securities during the period, taxes	$ 8,824	$ 6,787	$ 6,891	$ 3,560