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Share based compensation arrangement by share based payment award earn out percentage.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

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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Stock-Based Compensation (PSUs, RSUs and Restricted Stock) - Additional Information (Detail) - USD ($) shares in Thousands, $ in Millions		12 Months Ended
	Jul. 15, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share granted		1,097
Executive Officers and Certain Employees [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share granted				300
Adtran Networks [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of market based PSU awards converted to time based RSU awards	300
Performance Stock Units (PSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period				3 years
Share granted		100	900
Unrecognized compensation expense related to other than options		$ 10.9
Recognition period of non-vested compensation cost		1 year
Performance Stock Units (PSUs) [Member] \| Executive Officers and Certain Employees [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			1 year	2 years
Performance Stock Units (PSUs) [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of performance stock units granted				0.00%
Performance Stock Units (PSUs) [Member] \| Minimum [Member] \| Executive Officers and Certain Employees [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of performance stock units granted			0.00%	0.00%
Performance Stock Units (PSUs) [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of performance stock units granted				150.00%
Performance Stock Units (PSUs) [Member] \| Maximum [Member] \| Executive Officers and Certain Employees [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of performance stock units granted			142.80%	142.80%
PSUs, RSUs and Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		4 years
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		1 year
Market-Based PSUs, RSUs and Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to other than options		$ 10.7
Recognition period of non-vested compensation cost		2 years 1 month 6 days
Time-Based RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to other than options				$ 17.8
Unrecognized compensation expense related to other than options		$ 3.2
Recognition period of non-vested compensation cost		10 months 24 days