Short-Term Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Table summarizes the amortized cost and estimated fair value of the Company’s marketable securities
Amortized Cost	$ 24,957	$ 35,739
Unrealized Gains	5
Unrealized Losses		(7)
Fair Value	24,962	35,732
U.S. government-sponsored enterprise securities
Table summarizes the amortized cost and estimated fair value of the Company’s marketable securities
Amortized Cost		6,059
Fair Value		6,059
U.S. Treasury securities
Table summarizes the amortized cost and estimated fair value of the Company’s marketable securities
Amortized Cost	24,957	29,680
Unrealized Gains	5
Unrealized Losses		(7)
Fair Value	$ 24,962	$ 29,673

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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