Consolidated Statements of Changes in Stockholders' Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Consolidated Statements of Changes in Stockholders' Equity (unaudited) [Abstract]
Cash dividends - per share (in dollars per share)	$ 0.3	$ 0.28	$ 0.6	$ 0.56
Purchase of treasury shares (in shares)	87,000	182,900	87,000	400,000
Net issuance of shares to employee benefit plans and other stock plans (in shares)	9,432	26,983	55,941	68,394