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Marketable Securities and Fair Value Measurements - Schedule of Fair Value of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial Assets
Marketable Securities	$ 74,851	$ 84,180
Total	158,132	129,922
Level 1
Financial Assets
Total	83,281	45,742
Level 2
Financial Assets
Total	74,851	84,180
Cash
Financial Assets
Cash and Cash Equivalents	62,388	35,546
Cash | Level 1
Financial Assets
Cash and Cash Equivalents	62,388	35,546
Cash equivalents
Financial Assets
Cash and Cash Equivalents	20,893	10,196
Cash equivalents | Level 1
Financial Assets
Cash and Cash Equivalents	20,893	10,196
Certificates of deposit
Financial Assets
Marketable Securities	2,150	10,558
Certificates of deposit | Level 2
Financial Assets
Marketable Securities	2,150	10,558
Corporate securities
Financial Assets
Marketable Securities	45,145	51,951
Corporate securities | Level 2
Financial Assets
Marketable Securities	45,145	51,951
U.S. Treasury and agency securities
Financial Assets
Marketable Securities	9,505	9,225
U.S. Treasury and agency securities | Level 2
Financial Assets
Marketable Securities	9,505	9,225
Commercial paper
Financial Assets
Marketable Securities	12,136	500
Commercial paper | Level 2
Financial Assets
Marketable Securities	12,136	500
Asset-backed securities
Financial Assets
Marketable Securities	5,915	11,946
Asset-backed securities | Level 2
Financial Assets
Marketable Securities	$ 5,915	$ 11,946

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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