Stock Based Compensation (Awards of Restricted Stock) (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 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		$ 39.00
Vesting Period	Ratably over 3 years from grant date
5/20/2014 [Member] | 2010 Non-Employee Director Stock Plan [Member]
Restricted stock compensation footnote
Shares Granted		10,920
Fair Value		$ 35.08
Vesting Period	At the end of 5 years from grant date