Investments	6 Months Ended
Jun. 30, 2020
Debt Securities, Available-for-sale [Abstract]
Investments	InvestmentsWe have historically invested our excess cash primarily in debt instruments of financial institutions, corporations, U.S. government-sponsored agencies and the U.S. Treasury. We generally hold our investments to maturity and do not sell our investments before we have recovered our amortized cost basis. As of June 30, 2020 and December 31, 2019, our cash balance was comprised entirely of cash and cash equivalents and there was no unrealized gain or loss in either period.

The entire disclosure for investments in certain debt and equity securities.

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-Topic 942
-SubTopic 320
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Publisher FASB
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-Publisher FASB
-Name Accounting Standards Codification
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