Investment in Available-for-Sale Securities (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Available-for-sale Securities, Cost	$ 2,589,097	$ 2,661,356
Available-for-sale Securities, Gross Unrealized Gains	15,882	25,461
Available-for-sale Securities, Gross Unrealized Losses	(23,711)	(28,627)
Available-for-sale Securities, Fair Value	2,581,268	2,658,190
U.S. federal agency securities [Member]
Available-for-sale Securities, Cost	90,778	19,592
Available-for-sale Securities, Gross Unrealized Gains	129	196
Available-for-sale Securities, Gross Unrealized Losses	(339)	0
Available-for-sale Securities, Fair Value	90,568	19,788
Municipal securities [Member]
Available-for-sale Securities, Cost	722,321	1,154,841
Available-for-sale Securities, Gross Unrealized Gains	2,506	2,882
Available-for-sale Securities, Gross Unrealized Losses	(659)	(2,090)
Available-for-sale Securities, Fair Value	724,168	1,155,633
Certificates of Deposit [Member]
Available-for-sale Securities, Cost	1,567,570	1,193,494
Available-for-sale Securities, Gross Unrealized Gains	12,821	8,734
Available-for-sale Securities, Gross Unrealized Losses	(12,821)	(16,904)
Available-for-sale Securities, Fair Value	1,567,570	1,185,324
Corporate Debt Securities [Member]
Available-for-sale Securities, Cost	208,428	285,524
Available-for-sale Securities, Gross Unrealized Gains	426	4,164
Available-for-sale Securities, Gross Unrealized Losses	(9,892)	(9,633)
Available-for-sale Securities, Fair Value	198,962	280,055
Equity securities - ClearSign common stock [Member]
Available-for-sale Securities, Cost		7,905
Available-for-sale Securities, Gross Unrealized Gains		9,485
Available-for-sale Securities, Gross Unrealized Losses		0
Available-for-sale Securities, Fair Value		$ 17,390