XML 43 R33.htm IDEA: XBRL DOCUMENT v3.21.2

Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [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								Nine Months Ended
		September 30,								September 30,
(In thousands)		2021				2020				2021				2020
Stock-based compensation expense included in cost of revenue		$	133			$	101			$	389			$	303
Selling, general and administrative expense			1,116				953				3,312				2,999
Research and development expense			593				556				1,756				1,754
Stock-based compensation expense included in operating expenses			1,709				1,509				5,068				4,753
Total stock-based compensation expense			1,842				1,610				5,457				5,056
Tax benefit for expense associated with stock options, PSUs, RSUs and restricted stock			(460	)			(384	)			(1,343	)			(1,205	)
Total stock-based compensation expense, net of tax		$	1,382			$	1,226			$	4,114			$	3,851

Summary of PSUs, RSUs and Restricted Stock Outstanding

The following table summarizes PSUs, RSUs and restricted stock outstanding as of December 31, 2020 and September 30, 2021 and the changes that occurred during the nine months ended September 30, 2021:

		Number of Shares (in thousands)				Weighted Avg. Grant Date Fair Value (per share)
Unvested PSUs, RSUs and restricted stock outstanding, December 31, 2020			1,846			$	11.49
PSUs, RSUs and restricted stock granted			359			$	16.75
PSUs, RSUs and restricted stock vested			(21	)		$	13.00
PSUs, RSUs and restricted stock forfeited			(65	)		$	11.93
Unvested PSUs, RSUs and restricted stock outstanding, September 30, 2021			2,119			$	12.40

Summary of Stock Options Outstanding

The following table summarizes stock options outstanding as of December 31, 2020 and September 30, 2021 and the changes that occurred during the nine months ended September 30, 2021:

		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, 2020			2,718			$	21.17				2.9			$	—
Stock options exercised			(363	)		$	16.81								1,411
Stock options expired			(607	)		$	28.93								18
Stock options outstanding, September 30, 2021			1,748			$	19.37				2.7			$	2,060
Stock options exercisable, September 30, 2021			1,748			$	19.37				2.7			$	2,060

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:	nonnum: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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

+ Details

Name:	us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum: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 http://asc.fasb.org/extlink&oid=120381028&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 http://asc.fasb.org/extlink&oid=120381028&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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration