Stock Based Compensation (Awards of Restricted Stock) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Restricted stock compensation footnote
Shares Granted	20,700
3/20/14 [Member] | 2005 Employee Stock Plan [Member]
Restricted stock compensation footnote
Shares Granted	65,950
Fair Value	$ 39.82
Vesting Period	Ratably over 5 years from grant date
3/31/2014 [Member] | 2010 Non-Employee Director Stock Plan [Member]
Restricted stock compensation footnote
Shares Granted	3,000
Fair Value	$ 38.99
Vesting Period	Ratably over 3 years from grant date