Stockholders' Equity (Stock Rollforward) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes related to deferred compensation plan:
Preferred stock, shares issued, end of period	0	0
Common stock, shares issued, end of period	11,206,576	11,155,648
Treasury stock, shares, end of period	600,794	607,688
Preferred Stock
Class of Stock
Repurchase of preferred shares and common stock warrant			(39,000)
Increase (Decrease) in Stock by Class
Preferred stock, shares issued, beginning of period			39,000
Changes related to deferred compensation plan:
Preferred stock, shares issued, end of period	0	0	0
Common Stock
Increase (Decrease) in Stock by Class
Common stock, shares issued, beginning of period	11,155,648	11,122,247	11,070,022
Changes related to stock-based compensation awards:
Release of restricted common shares	31,246	14,552	21,510
Changes related to deferred compensation plan:
Common shares issued under dividend reinvestment plan	19,682	18,849	24,770
Common shares issued under Board of Directors' compensation plan			(5,945)
Common stock, shares issued, end of period	11,206,576	11,155,648	11,122,247
Treasury Stock
Increase (Decrease) in Stock by Class
Treasury stock, shares, beginning of period	607,688	615,123	612,695
Changes related to stock-based compensation awards:
Release of restricted common shares	6,862	4,270	5,443
Changes related to deferred compensation plan:
Purchase of treasury stock	3,652	3,918	8,623
Reissuance of treasury stock	(9,147)	(8,897)	(9,209)
Common shares issued under Board of Directors' compensation plan	(8,261)	(6,726)	(2,429)
Treasury stock, shares, end of period	600,794	607,688	615,123