Marketable Securities (Narrative) (Details) |
Mar. 31, 2019
USD ($)
item
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|---|---|
| Commercial Paper [Member] | |
| Schedule of Available-for-sale Securities [Line Items] | |
| Securities in a loss position, less than one year | item | 6 |
| Fair value, less than one year | $ 5,897,019 |
| Unrealized losses, less than one year | $ 5,414 |
| Corporate Bonds [Member] | |
| Schedule of Available-for-sale Securities [Line Items] | |
| Securities in a loss position, less than one year | item | 3 |
| Fair value, less than one year | $ 2,999,490 |
| Unrealized losses, less than one year | $ 3,999 |
| Securities in a loss position, greater than one year | item | 3 |
| Fair value, greater than one year | $ 2,996,310 |
| Unrealized losses, greater than one year | $ 3,189 |
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. No definition available.
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months. No definition available.
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- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. No definition available.
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- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. No definition available.
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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. No definition available.
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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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