Cash Equivalents and Investments (Narrative) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
Apr. 30, 2020 |
|
| Debt and Equity Securities, FV-NI [Line Items] | |||||
| Gross realized gains (losses) | $ 0 | $ 0 | $ 0 | $ 0 | |
| Common Stock [Member] | |||||
| Debt and Equity Securities, FV-NI [Line Items] | |||||
| Investment | $ 899,000 | ||||
| X | ||||||||||
- Definition This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. No definition available.
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| X | ||||||||||
- Definition Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- Details
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