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- Definition

Operating loss carryforwards expiration year.

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Percentage of the value of the unused research and development tax credits that are allowed to be exchanged for cash by qualified small companies conducting research and development in Connecticut under the Connecticut Research and Development Tax Credit Exchange Program.

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Tax credit carry forward expiration year.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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- Definition

A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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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 the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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- Definition

Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes
Company's effective tax rate	0.56%	0.00%	0.00%
Percentage of eligible annual research and development credit for cash	65.00%	65.00%	65.00%
Benefit from income taxes	$ (398)	$ 0	$ 0
Valuation allowance on the deferred tax asset	100.00%	100.00%
Change in valuation allowance	$ 7,865	$ 31,977
Unrecognized tax benefits, related interest and penalties	$ 0	$ 0	$ 0
Tax examinations, description	tax years 2006 through 2024 remain open to U.S. federal and state tax examinations.
Income taxes using U.S. federal statutory rate	21.00%	21.00%	21.00%
Federal [Member]
Income Taxes
Net operating loss carryforwards	$ 475,440
Federal [Member] \| Earliest Tax Year [Member]
Income Taxes
Tax loss carryforwards expiration year	2026
Federal [Member] \| R&D Tax Credit Carryforwards [Member]
Income Taxes
Tax credit carryforwards	$ 28,557
Federal [Member] \| R&D Tax Credit Carryforwards [Member] \| Earliest Tax Year [Member]
Income Taxes
Tax credit expiration year	2025
State and Local [Member]
Income Taxes
Net operating loss carryforwards	$ 403,138
State and Local [Member] \| Earliest Tax Year [Member]
Income Taxes
Tax loss carryforwards expiration year	2027
State and Local [Member] \| R&D Tax Credit Carryforwards [Member]
Income Taxes
Tax credit carryforwards	$ 4,379