Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Consolidated Balance Sheets [Abstract]
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Authorized	15,000,000	15,000,000
Common Stock, Shares, Issued	4,709,849	4,701,367
Common Stock, Shares, Outstanding	4,352,753	4,408,761
Capital Stock, Shares Authorized	5,000,000	5,000,000
Capital Stock, Shares, Issued	0	0
Capital Stock, Shares, Outstanding	0	0
Treasury Stock, Shares	357,096	292,606