XML 41 R32.htm IDEA: XBRL DOCUMENT
v3.22.2

Stock-Based Compensation (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2022
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation Expense Related to Stock Options, PSUs, RSUs and Restricted Stock | The following table summarizes stock-based compensation expense related to stock options, performance stock units (“PSUs”), restricted stock units (“RSUs”) and restricted stock:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
(In thousands) |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Stock-based compensation expense included in cost of revenue |  | $ | 162 |  |  | $ | 125 |  |  | $ | 321 |  |  | $ | 256 |
Selling, general and administrative expense |  |  | 1,135 |  |  |  | 1,098 |  |  |  | 2,259 |  |  |  | 2,196 |
Research and development expense |  |  | 591 |  |  |  | 585 |  |  |  | 1,201 |  |  |  | 1,163 |
Stock-based compensation expense included in operating expenses |  |  | 1,726 |  |  |  | 1,683 |  |  |  | 3,460 |  |  |  | 3,359 |
Total stock-based compensation expense |  |  | 1,888 |  |  |  | 1,808 |  |  |  | 3,781 |  |  |  | 3,615 |
Tax benefit for expense associated with stock options, PSUs, RSUs and restricted stock |  |  | (472 | ) |  |  | (452 | ) |  |  | (945 | ) |  |  | (883 | )
Total stock-based compensation expense, net of tax |  | $ | 1,416 |  |  | $ | 1,356 |  |  | $ | 2,836 |  |  | $ | 2,732 |
Summary of PSUs, RSUs and Restricted Stock Outstanding | The following table summarizes PSUs, RSUs and restricted stock outstanding as of December 31, 2021 and June 30, 2022 and the changes that occurred during the six months ended June 30, 2022:
|  | Number of Shares (in thousands) |  |  | Weighted Avg. Grant Date Fair Value (per share) |
Unvested PSUs, RSUs and restricted stock outstanding, December 31, 2021 |  |  | 1,930 |  |  | $ | 14.11 |
PSUs, RSUs and restricted stock granted |  |  | 336 |  |  | $ | 20.14 |
PSUs, RSUs and restricted stock vested |  |  | (15 | ) |  | $ | 13.26 |
PSUs, RSUs and restricted stock forfeited |  |  | (41 | ) |  | $ | 14.08 |
Unvested PSUs, RSUs and restricted stock outstanding, June 30, 2022 |  |  | 2,210 |  |  | $ | 15.04 |
Summary of Stock Options Outstanding | The following table summarizes stock options outstanding as of December 31, 2021 and June 30, 2022 and the changes that occurred during the six months ended June 30, 2022:
|  | Number of Stock Options (in thousands) |  |  | Weighted Avg. Exercise Price (per share) |  |  | Weighted Avg. Remaining Contractual Life (in years) |  |  | Aggregate Intrinsic Value (in thousands) |
Stock options outstanding, December 31, 2021 |  |  | 1,721 |  |  | $ | 19.37 |  |  |  | 2.4 |  |  | $ | 6,669 |
Stock options exercised |  |  | (37 | ) |  | $ | 17.24 |  |  |  |  |  | $ | 110 |
Stock options expired |  |  | (23 | ) |  | $ | 23.67 |  |  |  |  |  | $ | 5 |
Stock options outstanding, June 30, 2022 |  |  | 1,661 |  |  | $ | 19.36 |  |  |  | 1.9 |  |  | $ | 1,127 |
Stock options exercisable, June 30, 2022 |  |  | 1,661 |  |  | $ | 19.36 |  |  |  | 1.9 |  |  | $ | 1,127 |

X
- Definition Schedule of share based compensation performance stock units restricted stock units and restricted stock activity. + References No definition available. + Details
Name: | adtn_ScheduleOfShareBasedCompensationPerformanceStockUnitsRestrictedStockUnitsAndRestrictedStockActivityTableTextBlock
Namespace Prefix: | adtn_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + 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 (h)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration