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Fair Value Measurements - Additional Information (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Fair value assets transfers between levels amount	$ 0
Corporate [Member]
Schedule Of Available For Sale Securities [Line Items]
Available for sale securities aggregate market value	0	$ 0
Level 2 [Member] | Corporate [Member]
Schedule Of Available For Sale Securities [Line Items]
Available For sale securities continuous unrealized loss position twelve months or more amortized historical cost basis	4,700,000
Available for sale securities aggregate market value	$ 4,900,000

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- Definition

Available for sale securities continuous unrealized loss position twelve months or more amortized historical cost basis.

+ References

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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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922890-210455

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27337-111563

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=118942371&loc=SL82922954-210456

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