CONSOLIDATED BALANCE SHEETS [Parenthetical] - $ / shares	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 1,000	$ 1,000	$ 1,000
Preferred Stock, Shares Authorized	5,000,000	5,000,000	5,000,000
Preferred Stock, Shares Issued	0	0	0
Preferred Stock, Shares Outstanding	0	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 1	$ 1	$ 1
Common Stock, Shares Authorized	100,000,000	100,000,000	100,000,000
Common Stock, Shares, Issued	36,272,185	33,625,162	33,592,585
Treasury Stock, Shares	1,434,731	1,413,777	1,410,442