Investments in Securities and Fair Value Schedule of Gross Unrealized Gains and Losses and Amortized Cost for Securities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Available-for-sale Securities [Abstract]
Amortized Cost	$ 87,980,160	$ 75,573,673
Gross Unrealized Gains	3,962,860	6,388,510
Gross Unrealized Losses	497,607	25,205
Estimated Fair Value	91,445,413	81,936,978
Amortized Cost	22,200,369	21,229,114
Gross Unrealized Gains	14,052,780	7,373,056
Gross Unrealized Losses	109,084	91,237
Estimated Fair Value	36,144,065	28,510,933
Short Term Investments Amortized Cost Basis	7,926,373	13,567,648
Short Term Investments Gross Unrealized Gains	0	0
Short Term Investments Gross Unrealized Losses	0	0
Short Term Investments Estimated Fair Value	7,926,373	13,567,648
General obligations of U.S. States, territories and political subdivisions
Available-for-sale Securities [Abstract]
Amortized Cost	38,449,309	38,658,463
Gross Unrealized Gains	1,922,862	3,211,445
Gross Unrealized Losses	184,351	0
Estimated Fair Value	40,187,820	41,869,908
Issuer obligations of U.S. States, territories and political subdivisions special revenue
Available-for-sale Securities [Abstract]
Amortized Cost	30,874,571	18,933,299
Gross Unrealized Gains	1,234,130	1,909,106
Gross Unrealized Losses	204,800	10,455
Estimated Fair Value	31,903,901	20,831,950
Corporate debt securities
Available-for-sale Securities [Abstract]
Amortized Cost	17,736,608	17,064,697
Gross Unrealized Gains	789,840	1,252,973
Gross Unrealized Losses	108,456	14,750
Estimated Fair Value	18,417,992	18,302,920
Auction rate securities
Available-for-sale Securities [Abstract]
Amortized Cost	919,672	917,214
Gross Unrealized Gains	16,028	14,986
Gross Unrealized Losses	0	0
Estimated Fair Value	935,700	932,200
Common stocks and nonredeemable preferred stocks
Available-for-sale Securities [Abstract]
Amortized Cost	22,200,369	21,229,114
Gross Unrealized Gains	14,052,780	7,373,056
Gross Unrealized Losses	109,084	91,237
Estimated Fair Value	36,144,065	28,510,933
Certificates of deposit and money market funds
Available-for-sale Securities [Abstract]
Short Term Investments Amortized Cost Basis	7,926,373	13,567,648
Short Term Investments Gross Unrealized Gains	0	0
Short Term Investments Gross Unrealized Losses	0	0
Short Term Investments Estimated Fair Value	$ 7,926,373	$ 13,567,648

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Available-For-Sale Equity Securities Gross Unrealized Losses

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This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 19

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

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-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6505594

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This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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