XML 69 R64.htm IDEA: XBRL DOCUMENT v3.24.1.1.u2

Inventory - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Inventory [Line Items]
Inventory write down	$ 3,992	$ 0
Business Efficiency Program
Inventory [Line Items]
Strategy shift charges	8,800
Inventory write down	4,000
Other charges	$ 4,800

X

- Definition

Other charges.

+ References

No definition available.

+ Details

Name:	adtn_OtherCharges
Namespace Prefix:	adtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Strategy shift charges.

+ References

No definition available.

+ Details

Name:	adtn_StrategyShiftCharges
Namespace Prefix:	adtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_InventoryLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 330
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483080/330-10-50-2

+ Details

Name:	us-gaap_InventoryWriteDown
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=adtn_BusinessEfficiencyProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: