Shareholders' Equity (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Shareholders' Equity [Abstract]
Common Stock, Par or Stated Value Per Share	$ 1.00	$ 1
Stock Repurchase Program, Period in Force	1 year
Dividend Reinvestment plan shares authorized	1,000,000
Common stock issued under dividend reinvestment plan, shares	84,122	102,200	18,154
Common stock issued under dividend reinvestment plan	$ 1,174	$ 1,706	$ 316
Dividend Reinvestment plan shares remain to be issues	795,524