Business acquisition equity interest issued or issuable for each share of acquired entity.

No definition available.

Name:	adtn_BusinessAcquisitionEquityInterestIssuedOrIssuableForEachShareOfAcquiredEntity
Namespace Prefix:	adtn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of outstanding bearer shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	adtn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Summary of significant accounting policy.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the business acquisition agreement was executed, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

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

- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
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- Details

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Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_EquityInterestIssuedOrIssuableByTypeAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
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Summary of Significant Accounting Policies - Additional Information (Details) - $ / shares	Jul. 15, 2022	Aug. 30, 2021	Jun. 30, 2022	Dec. 31, 2021
Summary Of Significant Accounting Policy [Line Items]
Common stock, par value		$ 0.01	$ 0.01	$ 0.01
Common stock, shares outstanding			49,126,000	49,063,000
Subsequent Event [Member]
Summary Of Significant Accounting Policy [Line Items]
Issuance of shares of common stock	27,994,595
Acorn HoldCo, Inc., [Member]
Summary Of Significant Accounting Policy [Line Items]
Business combination date of agreement		Aug. 30, 2021
Common stock, par value		$ 0.01
Acorn HoldCo, Inc., [Member] \| Subsequent Event [Member]
Summary Of Significant Accounting Policy [Line Items]
Common stock, shares outstanding	33,957,538
Percentage of outstanding bearer shares	65.43%
Acorn HoldCo, Inc., [Member] \| ADVA Optical Networking SE, [Member] \| Common Stock [Member]
Summary Of Significant Accounting Policy [Line Items]
Number of shares issuable for each share of acquired entity		0.8244