Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Purchase of shares of treasury stock (in shares)	756,817	153,005	180,112
Shares of common stock for the exercise of stock options (in shares)	23,581	116,753	630,373
Issuance of restricted common shares, net of forfeitures (in shares)			6,793
Dividends declared per common share (in dollars per share)	$ 0.84	$ 0.48	$ 0.21