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Investments In Securities And Fair Value (Schedule Of Gross Realized Gains And Losses On Securities) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items] |  |
Total, Gross realized gains | $ 714,168 | $ 593,855
Total, Gross realized losses | (185,411) | (528,104)
Net realized gain | 528,757 | 65,751
General Obligations Of U.S. States, Territories And Political Subdivisions [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total, Gross realized gains | 250 | 386
Corporate Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total, Gross realized gains | 52,396 | 20,459
Common Stocks And Nonredeemable Preferred Stocks [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total, Gross realized gains | 450,461 | 529,811
Total, Gross realized losses | (91,975) | (247,117)
Auction Rate Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total, Gross realized gains | 211,061 | 43,199
Other Than Temporary Impairment Of Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total, Gross realized losses | $ (93,436) | $ (280,987)

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- Definition This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 + Details
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- Definition This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph a -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. + Details
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- Definition This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph a -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. + Details
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