Cash Equivalents and Investments (Narrative) (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
|
| Cash Equivalents and Investments [Abstract] | ||
| Gross realized gains (losses) | $ 0 | $ 0 |
| 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.
|
| X | ||||||||||
- References No definition available.
|