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Investments (Details)	6 Months Ended
	Jun. 30, 2020
Investments [Abstract]
One year or less	92.00%
After one year but within two years	8.00%
Total	100.00%

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- Definition

Debt Securities, Available For Sale, Current, Percent

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Debt Securities, Available For Sale, Noncurrent, Percent

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Debt Securities, Available for Sale, Percent

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