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Summary Of Significant Accounting And Reporting Policies (Schedule Of Amortized Cost, Unrealized Gains And Losses, And Market Value Of Investment Securities) (Details) (USD $) | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | $ 179,388,001 | $ 172,957,560
Unrealized Gains | 23,937,617 | 18,597,832
Unrealized Losses | (688,728) | (2,578,990)
Market Value | 202,636,890 | 188,976,402
Government Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 38,514,411 | 35,016,980
Unrealized Gains | 9,004 | 7,090
Unrealized Losses | (944) | (40)
Market Value | 38,522,471 | 35,024,030
U.S. Treasury Notes [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 15,018,810 | 25,025,600
Unrealized Gains | 2,602 | 18,400
Unrealized Losses | (1,062) |
Market Value | 15,020,350 | 25,044,000
Corporate Bonds, Short-Term [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 6,529,758 | 648,879
Unrealized Gains | 33,470 | 325
Market Value | 6,563,228 | 649,204
Corporate Bond, Long-Term [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 2,174,948 |
Unrealized Gains | 5,832 |
Market Value | 2,180,780 |
Other [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 185,926 | 91,003
Market Value | 185,926 | 91,003
Common Stocks [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 40,893,121 | 42,344,526
Unrealized Gains | 12,781,501 | 12,274,640
Unrealized Losses | (391,421) | (1,064,863)
Market Value | 53,283,201 | 53,554,303
Mutual Funds - Equity [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 75,321,640 | 68,986,676
Unrealized Gains | 11,082,714 | 6,277,183
Unrealized Losses | (295,301) | (1,514,087)
Market Value | 86,109,053 | 73,749,772
Certificate Of Deposit [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 510,881 | 505,390
Market Value | 510,881 | 505,390
Other - Equity [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 238,506 | 338,506
Unrealized Gains | 22,494 | 20,194
Market Value | $ 261,000 | $ 358,700

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- Definition 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 -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 3: http://www.xbrl.org/2003/role/presentationRef -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. + Details
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