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Investments (Details) (USD $)							3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Mutual funds [Member]	Dec. 31, 2013 Mutual funds [Member]	Mar. 31, 2014 Municipal bonds [Member]	Dec. 31, 2013 Municipal bonds [Member]	Mar. 31, 2014 Maximum [Member] Municipal bonds [Member]	Mar. 31, 2013 Maximum [Member] Municipal bonds [Member]
Summary of investments
Contractual Maturity							1 year	1 year
Cost	$ 18,083,302	$ 18,983,662	$ 17,278,158	$ 18,178,518	$ 805,144	$ 805,144
Gross Unrealized Gains	0	560	0	0	0	560
Gross Unrealized Losses	(71,810)	(78,614)	(71,638)	(78,614)	(172)	0
Fair Market Value	$ 18,011,492	$ 18,905,608	$ 17,206,520	$ 18,099,904	$ 804,972	$ 805,704

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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-Name Accounting Standards Codification

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