Consolidated Balance Sheets - Parenthetical - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Details
Preferred Stock, Par or Stated Value Per Share	$ 1.00	$ 1.00
Preferred Stock, Shares Authorized	100,000	100,000
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 1.00	$ 1.00
Common Stock, Shares Authorized	23,000,000	23,000,000
Common Stock, Shares, Issued	18,625,458	18,625,458
Common Stock, Shares, Outstanding	14,644,389	14,643,047
Treasury Stock, Shares	3,981,069	3,982,411