(5) Schedule Of Available For Sale Securities (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Auction Rate Securities
Aggregate Fair Value	$ 464,999	$ 611,082
Cost or Amortized Cost	500,000	700,000
Net Unrealized Gains / (loss)	(35,001)	(88,918)
Government Securities
Aggregate Fair Value	13,603,098	17,303,207
Cost or Amortized Cost	13,593,019	17,286,598
Net Unrealized Gains / (loss)	10,079	16,609
Corporate Debt Securities
Aggregate Fair Value	3,019,589	3,591,121
Cost or Amortized Cost	3,020,100	3,602,602
Net Unrealized Gains / (loss)	$ (511)	$ (11,481)