Shared Based Compensation (Narrative) (Details) (USD $)	0 Months Ended	1 Months Ended	0 Months Ended	3 Months Ended	6 Months Ended
	Dec. 02, 2010	Jun. 26, 2010	Sep. 14, 2009	Jun. 30, 2013	Jun. 30, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of independent directors entered into option agreement			3
Stock option granted	4,167	86,250	833
Stock option granted, exercise price	$ 82.08	$ 105.60	$ 192
Options vesting installments	4	4	3
Options expiration period	8 years	8 years	5 years
Stock-based compensation				$ 204,117	$ 408,234
Total unrecognized compensation cost				$ 816,191	$ 816,191
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cost expected to be recognized over a weighted - average period					1 year
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cost expected to be recognized over a weighted - average period					2 years