Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Issuance of shares of common stock, shares (in shares)	7,067	2,607	9,667	5,915
Net change in fair value of available-for-sale securities during the period, taxes	$ 2,531	$ 10,622	$ 3,227	$ 26,377
Cash dividends declared, per share (in dollars per share)	$ 0	$ 0.35	$ 0.75	$ 1.10
Issuance of shares of common stock pursuant to dividend reinvestment plan, shares (in shares)		48,172	96,773	151,105