Stock Options (Schedule of Non-Qualified Stock Options Outstanding and Exercisable) (Details) (Non Qualified Options, USD $)					12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 $11.45 - $17.85		Dec. 31, 2013 $19.79 - $32.76		Dec. 31, 2013 $42.70 - $42.70
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Range Limit					$ 11.45		$ 19.79		$ 42.70
Range of Exercise Price, Upper Range Limit					$ 17.85		$ 32.76		$ 42.7
Options Outstanding, Shares					37,200		52,500		25,000
Options Outstanding, Shares, Total	114,700	89,700	112,800	102,400
Options Outstanding, Remaining Contractual Life					5 years 4 months 10 days	[1]	5 years 7 months 10 days		9 years 4 months 6 days	[1]
Options Outstanding, Exercise Price					$ 11.45	[1]	$ 25.90	[1]	$ 42.70	[1]
Options Exercisable, Shares					23,400		34,500		0
Options Exercisable, Shares, Total	57,900	38,100	37,400
Options Exercisable, Exercise Price					$ 11.45	[1]	$ 25.61	[1]	$ 0.00	[1]

[1] Weighted Averages