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Investment in Available-for-Sale Securities (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Available-for-sale Securities, Cost $ 2,661,403 $ 2,516,799
Available-for-sale Securities, Unrealized Gains 25,461 12,787
Available-for-sale Securities, Unrealized Losses (28,674) (37,813)
Available-for-sale Securities, Fair Value 2,658,190 2,491,773
U.S. federal agency securities [Member]
   
Available-for-sale Securities, Cost 19,592 15,153
Available-for-sale Securities, Unrealized Gains 196 411
Available-for-sale Securities, Unrealized Losses 0 0
Available-for-sale Securities, Fair Value 19,788 15,564
Municipal securities [Member]
   
Available-for-sale Securities, Cost 1,154,888  
Available-for-sale Securities, Unrealized Gains 2,882  
Available-for-sale Securities, Unrealized Losses (2,137)  
Available-for-sale Securities, Fair Value 1,155,633  
Certificates Of Deposit [Member]
   
Available-for-sale Securities, Cost 1,193,494 776,244
Available-for-sale Securities, Unrealized Gains 8,734 1,222
Available-for-sale Securities, Unrealized Losses (16,904) (23,843)
Available-for-sale Securities, Fair Value 1,185,324 753,623
Corporate Debt Securities [Member]
   
Available-for-sale Securities, Cost 285,524 1,725,402
Available-for-sale Securities, Unrealized Gains 4,164 11,154
Available-for-sale Securities, Unrealized Losses (9,633) (13,970)
Available-for-sale Securities, Fair Value 280,055 1,722,586
Equity securities - ClearSign common stock [Member]
   
Available-for-sale Securities, Cost 7,905  
Available-for-sale Securities, Unrealized Gains 9,485  
Available-for-sale Securities, Unrealized Losses 0  
Available-for-sale Securities, Fair Value $ 17,390