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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Contingencies And Commitments [Line Items]
Commitments related to performance bonds	$ 22.0	$ 22.9
Purchase commitments	$ 552.4

X

- Definition

Commitments related to performance bonds.

+ References

No definition available.

+ Details

Name:	adtn_CommitmentsRelatedToPerformanceBonds
Namespace Prefix:	adtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Contingencies and commitments.

+ References

No definition available.

+ Details

Name:	adtn_ContingenciesAndCommitmentsLineItems
Namespace Prefix:	adtn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

+ Details

Name:	us-gaap_PurchaseObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant