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Marketable Investment Securities (Tables) | 12 Months Ended
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Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract] |
Available-for-sale Securities [Table Text Block] | The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security at December 31, 2015 were as follows:
|  |  |  | Gross |  | Gross |  |  |
|  |  |  | unrealized |  | unrealized |  |  |
|  | Amortized |  | holding |  | holding |  | Aggregate |
|  | Cost |  | gains |  | losses |  | fair value |
Government notes |  | $ | 802,862 |  | $ | - |  | $ | (750) |  | $ | 802,112 |
Corporate bonds and notes |  |  | 24,005,458 |  |  | 594 |  |  | (32,744) |  |  | 23,973,308 |
|  | $ | 24,808,320 |  | $ | 594 |  | $ | (33,494) |  | $ | 24,775,420 |
Schedule Of Available For Sale Securities Debt Maturities [Table Text Block] | There were no marketable investment securities held as of December 31, 2014. Maturities of debt securities classified as available-for-sale securities at December 31, 2015 are as follows:
|  | Amortized |  | Aggregate fair |
|  | Cost |  | value |
Due within one year |  | $ | 24,407,539 |  | $ | 24,375,168 |
Due after one year through five years |  |  | 400,781 |  |  | 400,252 |
Due after five years |  |  | - |  |  | - |
|  | $ | 24,808,320 |  | $ | 24,775,420 |

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- Definition Tabular disclosure of the fair value of available-for-sale debt securities maturing. + References No definition available. + Details
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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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