Marketable Securities (Narrative) (Details) |
Dec. 31, 2016
USD ($)
item
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Dec. 31, 2015
USD ($)
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Schedule of Available-for-sale Securities [Line Items] | ||
Fair value | $ 8,737,107 | $ 13,240,086 |
Unrealized losses | $ 6,319 | $ 18,612 |
4 Commercial Paper With Unrealized Losses [Member] | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Securities in a loss position | item | 4 | |
Fair value | $ 3,985,740 | |
Unrealized losses | $ 1,684 | |
4 Corporate Bond Securities With Unrealized Losses [Member] | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Securities in a loss position | item | 4 | |
Fair value | $ 4,031,170 | |
Unrealized losses | $ 4,635 |
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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 Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. No definition available.
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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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