XML 73 R59.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Stock-Based Compensation (Stock Incentive Program Descriptions) - Additional Information (Detail) - shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Jan. 31, 2015
PSUs, RSUs and Restricted Stock [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Vesting period | 4 years |
2015 Employee Stock Incentive Plan [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of additional shares of common stock granted | 0 |
Number of shares of common stock authorized |  | 7,700,000
Multiplier used when issuing PSUs, restricted stock and RSUs |  | 2.5
Vesting period | 4 years |
Contractual term | 10 years |
2015 Employee Stock Incentive Plan [Member] | Minimum [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Expiration date of options | 2025 |
2015 Employee Stock Incentive Plan [Member] | Maximum [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Expiration date of options | 2026 |
2010 Directors Stock Plan [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of additional shares of common stock granted | 0 |
Number of shares of common stock authorized | 500,000 |
Contractual term | 10 years |
Expiration date of options | 2019 |
Previous Stock Incentive Plans [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of additional shares of common stock granted | 0 |
2020 Employee Incentive Plan [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of shares of common stock authorized | 2,800,000 |
Multiplier used when issuing PSUs, restricted stock and RSUs | 1 |
Contractual term | 10 years |
2020 Employee Incentive Plan [Member] | PSUs, RSUs and Restricted Stock [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Vesting period | 4 years |
2020 Employee Incentive Plan [Member] | Stock Options [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Vesting period | 4 years |
2015 Employee Incentive Plan to 2020 Employee Incentive Plan [Member] | PSUs, RSUs and Restricted Stock [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Forfeiture of stock increase in issuance of common stock | 2.5 |
2020 Directors Stock Plan [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of shares of common stock authorized | 400,000 |
Multiplier used when issuing PSUs, restricted stock and RSUs | 1 |
Forfeiture of stock increase in issuance of common stock | 1 |
Contractual term | 10 years |
2006 Employee Stock Incentive Plan [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of shares of common stock authorized | 13,000,000.0 |
Vesting period | 4 years |
Contractual term | 10 years |
2006 Employee Stock Incentive Plan [Member] | Minimum [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Expiration date of options | 2022 |
2006 Employee Stock Incentive Plan [Member] | Maximum [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Expiration date of options | 2024 |

X
- Definition Year the equity-based award expires. + References No definition available. + Details
Name: | adtn_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationYear
Namespace Prefix: | adtn_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share based compensation arrangement by share based payment award forfeiture of common stock multiplier used in determining issuable shares. + References No definition available. + Details
Name: | adtn_ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeitureOfCommonStockMultiplierUsedInDeterminingIssuableShares
Namespace Prefix: | adtn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share based compensation arrangement by share based payment award number of additional shares granted. + References No definition available. + Details
Name: | adtn_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesGranted
Namespace Prefix: | adtn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based compensation arrangement by share-based payment award, common stock multiplier used in determining issuable shares. + References No definition available. + Details
Name: | adtn_SharebasedCompensationArrangementBySharebasedPaymentAwardCommonStockMultiplierUsedInDeterminingIssuableShares
Namespace Prefix: | adtn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
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_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=adtn_TwoThousandAndFifteenEmployeeStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=adtn_TwoThousandAndTenDirectorsStockPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=adtn_PreviousStockIncentivePlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=adtn_TwoThousandTwentyEmployeeIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=adtn_TwoThousandAndFifteenToTwoThousandTwentyEmployeeIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=adtn_TwoThousandTwentyDirectorsStockPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=adtn_TwoThousandAndSixEmployeeStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |