Stock-Based Compensation (Schedule of Non-Qualified Stock Options Outstanding and Excercisable) (Details) (Non Qualified Options, USD $)			6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 $11.45 - $17.85		Jun. 30, 2013 $19.79 - $32.76		Jun. 30, 2013 $42.70 - $42.70
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Excercise 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
Remaining Contractual Life(yrs)			5 years 10 months 13 days	[1]	6 years 1 month 10 days	[1]	9 years 10 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
Options Exercisable, Exercise Price			$ 11.45	[1]	$ 25.61	[1]	$ 0.00	[1]

[1] Weighted Averages