CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares		Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred Stock, shares authorized (shares)		500,000	500,000
Preferred Stock, shares issued (shares)		0	0
Common Stock, stated value (USD per share)		$ 1	$ 1
Common Stock, shares authorized (shares)	[1]	45,000,000	45,000,000

[1] Share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.