CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED BALANCE SHEETS
Common Stock, shares authorized	25,000,000	25,000,000
Common Stock, par value (in dollars per share)	$ 1	$ 1
Common Stock, shares issued	6,030,990	6,021,564
Common Stock, shares outstanding	5,584,335	5,710,238
Treasury Stock, shares held	446,655	311,326