Per Share Data - Narrative (Details) - $ / shares	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Aug. 27, 2015
Earnings Per Share [Abstract]
Convertible securities which would affect denominator in calculating basic and dilutive earnings per share (in shares)	0
Options, outstanding (in shares)	917,000	1,045,475	1,034,525	3,000
Outstanding, weighted average exercise price (in dollars per share)	$ 25.35	$ 27.25	$ 27.23
Average share price (in dollars per share)	$ 23.78	$ 23.70