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Fair Value Measurement - Summary of Contractual Maturities of Available for Sale Securities (Detail) $ in Thousands | Sep. 30, 2020 USD ($)
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Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities less than 1 year | $ 131,830
Available for sale securities, contractual maturities between 1 to 5 years | 83,049
Available for sale securities, contractual maturities between 5 to 10 years | 54,813
Available for sale securities, contractual maturities after 10 years | 36,609
Available for sale securities, contractual maturities, Total | 306,301
Corporate Bonds [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities less than 1 year | 41,077
Available for sale securities, contractual maturities between 1 to 5 years | 62,479
Available for sale securities, contractual maturities between 5 to 10 years | 34,076
Available for sale securities, contractual maturities, Total | 137,632
Money Market Funds [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities less than 1 year | 65,605
Available for sale securities, contractual maturities, Total | 65,605
U.S. Government Agency Securities [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities less than 1 year | 1,018
Available for sale securities, contractual maturities between 1 to 5 years | 14,646
Available for sale securities, contractual maturities between 5 to 10 years | 20,737
Available for sale securities, contractual maturities, Total | 36,401
Asset Backed Securities [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities between 1 to 5 years | 286
Available for sale securities, contractual maturities after 10 years | 36,609
Available for sale securities, contractual maturities, Total | 36,895
Discount Notes [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities less than 1 year | 9,999
Available for sale securities, contractual maturities, Total | 9,999
Commercial Paper [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities less than 1 year | 5,999
Available for sale securities, contractual maturities, Total | 5,999
U.S. Treasuries [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities less than 1 year | 3,330
Available for sale securities, contractual maturities between 1 to 5 years | 1,562
Available for sale securities, contractual maturities, Total | 4,892
Supranational Bonds [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities less than 1 year | 4,802
Available for sale securities, contractual maturities, Total | 4,802
Municipal Bonds [Member] |
Schedule Of Available For Sale Securities [Line Items] |
Available for sale securities, contractual maturities between 1 to 5 years | 4,076
Available for sale securities, contractual maturities, Total | $ 4,076

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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=120252992&loc=SL120269850-112803 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120252992&loc=SL120269850-112803 + Details
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120252992&loc=SL120269850-112803 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563 + Details
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