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OPERATING SEGMENT INFORMATION (Tables)

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

The tables below provide information regarding revenue, adjusted gross profit, and depreciation expense by reportable segment for the three months ended March 31, 2022 and 2021 (in thousands):

									Three months ended
															March 31, 2022						March 31, 2021
Segment revenue:
Cloud and Edge															$	109,806					$	125,422
IP Optical Networks															63,392						67,350
Revenue															$	173,198					$	192,772

									Three months ended
															March 31, 2022						March 31, 2021
Segment adjusted gross profit:
Cloud and Edge															$	68,293					$	84,335
IP Optical Networks															18,609						26,474
Total segment adjusted gross profit															86,902						110,809
Stock-based compensation expense															(580)						(262)
Amortization of acquired technology															(8,267)						(10,061)
Gross profit															$	78,055					$	100,486

									Three months ended
															March 31, 2022						March 31, 2021
Segment depreciation expense:
Cloud and Edge															$	2,715					$	3,137
IP Optical Networks															1,170						1,089
Depreciation expense															$	3,885					$	4,226

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599

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- References

No definition available.

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