Condensed Consolidated Balance Sheets - Parenthetical - $ / shares	Mar. 31, 2017	Dec. 31, 2016
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	18,620,508	18,620,508
Common Stock, Shares, Outstanding	16,377,756	17,102,525
Treasury Stock, Shares	2,242,752	1,517,983