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Short Term Investments (Tables)

12 Months Ended

Dec. 31, 2018

Subclassifications of assets, liabilities and equities [abstract]

Available for sale investments

		December 31, 2018												December 31, 2017
		Fair Value				Cost				Accumulated unrealized holding gains				Fair Value				Cost				Accumulated unrealized holding gains
Short-term investments		$	74,004			$	73,796			$	208			$	51,590			$	49,985			$	1,605

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- References

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- Definition

A table of investments, shown as a text block.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 6
-Section 10
-Paragraph (c)
-Subparagraph (1)

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