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Investments in Available-for-Sale Securities (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Available-for-sale Securities, Cost $ 2,038,831 $ 2,516,799
Available-for-sale Securities, Unrealized Gains 29,655 12,787
Available-for-sale Securities, Unrealized Losses (47,944) (37,813)
Available-for-sale Securities, Fair Value 2,020,542 2,491,773
U.S. federal agency securities [Member]
   
Available-for-sale Securities, Cost 19,604 15,153
Available-for-sale Securities, Unrealized Gains 295 411
Available-for-sale Securities, Unrealized Losses 0 0
Available-for-sale Securities, Fair Value 19,899 15,564
Municipal securities [Member]
   
Available-for-sale Securities, Cost 59,619  
Available-for-sale Securities, Unrealized Gains 0  
Available-for-sale Securities, Unrealized Losses (60)  
Available-for-sale Securities, Fair Value 59,559  
Certificates Of Deposit [Member]
   
Available-for-sale Securities, Cost 1,200,163 1,725,402
Available-for-sale Securities, Unrealized Gains 8,346 11,154
Available-for-sale Securities, Unrealized Losses (13,657) (13,970)
Available-for-sale Securities, Fair Value 1,194,852 1,722,586
Corporate Debt Securities [Member]
   
Available-for-sale Securities, Cost 751,540 776,244
Available-for-sale Securities, Unrealized Gains 3,624 1,222
Available-for-sale Securities, Unrealized Losses (34,227) (23,843)
Available-for-sale Securities, Fair Value 720,937 753,623
Equity securities - ClearSign common stock [Member]
   
Available-for-sale Securities, Cost 7,905  
Available-for-sale Securities, Unrealized Gains 17,390  
Available-for-sale Securities, Unrealized Losses 0  
Available-for-sale Securities, Fair Value $ 25,295