CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Excess common stock, par value	$ 1	$ 1
Excess common stock, shares authorised	100,000	100,000
Excess common stock, shares issued	0	0
Common stock par value	$ 1	$ 1
Common Stock, Shares Authorized	1,050,000	1,200,000
Common Stock, Shares, Issued	1,035,493	1,053,926
Treasury Stock, Shares	33,101	18,433