Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Purchase of shares of treasury stock (in shares)	99,453	427,329	166,962			26,932
Dividends declared per common share (in dollars per share)	$ 0.24	$ 0.24	$ 0.24	$ 0.12	$ 0.24
Shares of common stock for the exercise of stock options (in shares)	23,581			10,000		68,284