Summary of Significant Accounting Policies - Summary of Components of Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Amortized Cost	$ 1,650	$ 928
Unrealized Losses	(11)	(2)
Fair Value	1,639	926
U.S. Government Obligations [Member]
Amortized Cost	1,021	125
Unrealized Losses	(7)
Fair Value	1,014	125
Corporate Obligations [Member]
Amortized Cost	629	803
Unrealized Losses	(4)	(2)
Fair Value	$ 625	$ 801

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

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Amount of investment in marketable security, classified as current.

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