Stock-Based Compensation and Directors Stock Purchase Plan Stock-Based Compensation and Directors Stock Purchase Plan (Additional Information About Stock Options and SARs Exercises) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Intrinsic value of options and SARs exercised	$ 2,448	$ 7,664	$ 6,278
Tax benefit realized from options and SARs exercised	$ 462	$ 1,488	$ 1,252