CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Shareholders' Equity
Preferred Stock, Par Value	$ 1	$ 1
Preferred Stock, Authorized	4,998,130	4,998,130
Preferred Stock, Issued	0	0
Preferred Stock, Outstanding	0	0
Common Stock, No Par Value
Common Stock, Authorized	75,000,000	75,000,000
Common Stock, Issued	23,587,126	25,616,460
Common Stock, Outstanding	23,587,126	25,616,460
Series A Preferred Stock [Member]
Shareholders' Equity
Preferred Stock, Par Value	$ 1	$ 1
Preferred Stock, Authorized	5,000,000	5,000,000
Preferred Stock, Issued	0	0
Preferred Stock, Outstanding	0	0
Series B Preferred Stock [Member]
Shareholders' Equity
Preferred Stock, Par Value	$ 1	$ 1
Preferred Stock, Authorized	1,870	1,870
Preferred Stock, Issued	0	0
Preferred Stock, Outstanding	0	0