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Commitments and contingencies - Lease Contracts (Detail) $ in Thousands |  |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jul. 28, 2021 USD ($) ft² | Apr. 14, 2021 USD ($) ft² | Apr. 13, 2021 USD ($) ft² | Feb. 06, 2020 USD ($) | Dec. 31, 2020 USD ($) ft² item | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Operating lease expense |  |  |  |  |  | $ 9,500 | $ 7,900
Operating lease payment |  |  |  |  |  | $ 8,000 |
Lease weighted-average remaining lease term |  |  |  |  |  | 17 years 3 months 18 days |
Lease weighted average discount rate |  |  |  |  |  | 6.40% |
Anticipated receipt of the tenant incentive |  |  |  |  |  | $ 17,628 |
Change in right-of-use asset |  |  |  |  |  | 27,900 | 2,100
Change in operating lease liabilities. |  |  |  |  |  | 30,100 | $ 3,100
Non-cancelable operating lease payments in 2022 |  |  |  |  |  | 8,986 |
Future minimum payments |  |  |  |  |  | 134,239 |
First Lease Amendment [Member] |  |  |  |  |  |  |
Operating lease area | ft² |  |  | 101,000 |  |  |  |
Initial annual base rent |  |  | $ 1,200 |  |  |  |
Extension of lease term |  |  | 10 years |  |  |  |
Future minimum payments |  |  | $ 17,600 |  |  | 17,600 |
Percentage of increases base rental payments relating to original premises |  |  | 3.00% |  |  |  |
Percentage of obligated to payment of operating expenses |  |  | 26.00% |  |  |  |
Tenant improvement allowance connection with improvements to additional premises |  |  | $ 4,300 |  |  |  |
Agilent [Member] |  |  |  |  |  |  |
Litigation settlement amount |  |  |  | $ 22,500 |  |  |
Number of days from the settlement agreement pursuant to which litigation claims are to be settled |  |  |  | 14 days |  |  |
Wilsonville Oregon [Member] |  |  |  |  |  |  |
Operating lease area | ft² |  |  |  |  | 111,000 |  |
Operating lease term |  |  |  |  | 12 years |  |
Operating lease security deposit with the lessor |  |  |  |  | $ 1,000 |  |
Initial annual base rent |  |  |  |  | $ 1,700 |  |
Operating lease base rent annual percentage increase |  |  |  |  | 3.00% |  |
Tenant improvement allowance from lessor |  |  |  |  | $ 13,300 |  |
Number of extensions | item |  |  |  |  | 2 |  |
Extension of lease term |  |  |  |  | 5 years |  |
Future minimum payments |  |  |  |  |  | $ 27,900 |
Brisbane California [Member] |  |  |  |  |  |  |
Operating lease area | ft² |  | 15,500 |  |  |  |  |
Operating lease term |  | 5 years |  |  |  |  |
Security deposit |  | $ 200 |  |  |  |  |
Initial annual base rent |  | $ 300 |  |  |  |  |
Operating lease base rent annual percentage increase |  | 3.00% |  |  |  |  |
Future minimum payments |  | $ 2,200 |  |  |  |  |
South San Francisco, California [Member] |  |  |  |  |  |  |
Operating lease area | ft² | 21,000 |  |  |  |  |  |
Operating lease term | 7 years |  |  |  |  |  |
Security deposit | $ 200 |  |  |  |  |  |
Initial annual base rent | $ 1,700 |  |  |  |  |  |
Operating lease base rent annual percentage increase | 3.00% |  |  |  |  |  |
Future minimum payments | $ 13,100 |  |  |  |  |  |

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- Definition The increase (decrease) during the reporting period in operating lease right of use assets. + References No definition available. + Details
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- Definition The area leased by lessee in lease agreement classified as operating lease. + References No definition available. + Details
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- Definition Number of days from the settlement agreement pursuant to which the litigation claims are to be paid. + References No definition available. + Details
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- Definition Percentage of increases base rental payments relating to original premises. + References No definition available. + Details
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- Definition This item represents the deferred credit for an incentive or inducement received by a lessee from a lessor, in order to motivate the lessee to enter the lease agreement, which incentive or inducement is to be recognized as a reduction of rental expense over the lease term. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121549951&loc=d3e39896-112707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121577943&loc=d3e41620-112719 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121549951&loc=d3e40010-112707 + Details
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- Definition This item represents a receivable for an incentive or inducement contractually stipulated between parties to a lease whereby the lessor has committed to provide the entity (lessee) with a cash payment as inducement to enter the lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=121549951&loc=d3e40019-112707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121549951&loc=d3e40010-112707 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next 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 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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