The date on which base rent begins to accrue under a lease agreement, in YYYY-MM-DD format.

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The amount of annual base rent in a finance lease agreement.

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The interest rate used to calculate the present value of payments under a Finance Lease.

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The amount the Company is required to pay upon exercising the option to purchase assets under a Finance Lease.

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The average annual amount of increase in base rent under a lease agreement, as a percentage.

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The number of renewal options in a financing lease agreement.

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Number of properties acquired.

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Maturity year and month of recorded unconditional purchase commitment.

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The amount remaining on an unconditional purchase commitment.

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Area of a real estate property.

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- Definition

Amount of consideration transferred in asset acquisition. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

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Amount of liability recognized from contingent consideration in asset acquisition.

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Percentage employer matches of the employee's percentage contribution matched.

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- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

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Amount of incentive granted by lessor to lessee.

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Date which lease or group of leases is set to expire, in YYYY-MM-DD format.

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Description of lessee's finance lease.

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Term of lessee's finance lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

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Commitments and Contingencies - Additional Information (Detail) $ in Thousands		1 Months Ended	3 Months Ended
	Jan. 08, 2026 USD ($) ft² Parcel Option	Jan. 31, 2021 USD ($)	Mar. 31, 2026 USD ($) Property	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Recorded Unconditional Purchase Obligation [Line Items]
Defined contribution plan, contribution amount			$ 1,500	$ 1,100
Recorded unconditional purchase commitment, minimum quantity required		$ 9,500
Recorded unconditional purchase commitment, maturity year and month		2029-12
Remaining purchase commitment			$ 4,000
Number of properties acquired	2		2
Expected useful life			40 years
Total consideration			$ 404,300
Finance lease right-of-use asset	$ 336,600		$ 334,545
Incremental borrowing rate of interest			4.40%
First 3% of Compensation Contributed [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Defined contribution plan, matching percentage of each employee's contribution			100.00%
100% Match [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Defined contribution plan, percentage of matching contribution			3.00%
Excess of 3% to 5% of Compensation Contributed [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Defined contribution plan, matching percentage of each employee's contribution			50.00%
Fifty Percent Match [Member] \| Additional Maximum [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Defined contribution plan, percentage of matching contribution			2.00%
BRE-BMR Middlesex LLC [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Purchase price of each property	15,000
BRE-BMR Assembly Innovation I LLC {Member]
Recorded Unconditional Purchase Obligation [Line Items]
Purchase price of each property	$ 15,000
BioMed Realty
Recorded Unconditional Purchase Obligation [Line Items]
Area of real estate property \| ft²	498,286
Lessee finance lease description	Base rent begins to accrue in January 2028 at an annual rate of $23.9 million, and will increase by 2% annually during the first three years of the Initial Term and by 3% annually for each year thereafter. The Company will also be obligated to pay annual operating and tax expenses for the Premises. The Company holds two consecutive options to extend the term for additional periods of ten years each as well as an option to extend the term for a period of six months.
Lease expiration month and year	Jan. 31, 2044
Base rent accrue date	Jan. 01, 2028
Excercise purchase price	$ 374,600
BioMed Realty \| Letter of Credit [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Security deposit	$ 17,900
BioMed Realty \| First Three Years Of Initial Term [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Lease base rent annual increase	2.00%
BioMed Realty \| After Three Years During Initial Term [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Lease base rent annual increase	3.00%
BioMed Realty \| Option One [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Lessee, finance lease, renewal term	10 years
BioMed Realty \| Option Two [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Lessee, finance lease, renewal term	6 months
BioMed Realty \| First Lease Year [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Finance Lease Annual Base Rent	$ 23,900
BioMed Realty \| Ten Year Renewal Term [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Lessee financing lease number of renewal terms \| Option	2
Tenant Rebate
Recorded Unconditional Purchase Obligation [Line Items]
Tenant improvement allowance	$ 3,700
Tenant Improvements
Recorded Unconditional Purchase Obligation [Line Items]
Tenant improvement allowance	$ 400		$ 400