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Cash and cash equivalents and other investments | 12 Months Ended
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Dec. 31, 2019
Cash and cash equivalents [abstract] |
Cash and cash equivalents and other investments |
| 6. | Cash and cash equivalents and other investments
Cash and cash equivalents are as follows:
| December 31,
| 2 0 1 9 |  | 2 0 1 8
Cash | $ | 898,394 |  | $ | 514,166
Cash equivalents (1) |  | 6,548,053 |  |  | 6,473,075
| $ | 7,446,447 |  | $ | 6,987,241
| (1) | Cash equivalents are investments with initial original maturities of less than 90 days and consist primarily of Treasury Bills issued by the United States Treasury Department.

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- Definition The disclosure of cash and cash equivalents. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_10_e&doctype=Standard -URIDate 2019-03-27 + Details
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