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Derivative Instruments and Hedging Activities - Additional Information (Detail) - 12 months ended Dec. 31, 2016 - Forward Contracts [Member]	USD ($)	EUR (€)
Derivative [Line Items]
Derivative, notional amount	$ 5,800,000	€ 5,500,000
Derivative maturity year	2017

X

- Definition

Year the forward contracts mature.

+ References

No definition available.

+ Details

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Namespace Prefix:	adtn_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

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

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

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: