Marketable Securities (Narrative) (Details) - USD ($) |
Dec. 31, 2015 |
Dec. 31, 2014 |
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Schedule of Available-for-sale Securities [Line Items] | ||
Fair value | $ 13,240,086 | $ 22,872,051 |
Unrealized losses | 18,612 | $ 33,769 |
15 Certificates Of Deposit With Unrealized Losses [Member] | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Fair value | 3,594,425 | |
Unrealized losses | 5,575 | |
3 Commercial Paper With Unrealized Losses [Member] | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Fair value | 2,977,570 | |
Unrealized losses | 3,737 | |
3 Corporate Bond Securities With Unrealized Losses [Member] | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Fair value | 3,025,320 | |
Unrealized losses | 7,625 | |
1 Corporate Bond Securities With Unrealized Losses [Member] | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Fair value | 1,002,200 | |
Unrealized losses | $ 1,675 |
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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