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Goodwill and Intangible Assets - Schedule of Amortization Expense (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Apr. 26, 2020 | Apr. 28, 2019 | Jan. 26, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |
Fiscal year 2021 (remaining nine months) | $ 5,426 |  |
Fiscal year 2022 | 4,942 |  |
Fiscal year 2023 | 4,002 |  |
Fiscal year 2024 | 1,676 |  |
Fiscal year 2025 | 287 |  |
Thereafter | 839 |  |
Total expected amortization expense | 17,172 |  | $ 20,012
Intangible amortization | 2,840 | $ 5,143 |
Core technologies |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Fiscal year 2021 (remaining nine months) | 5,204 |  |
Fiscal year 2022 | 4,942 |  |
Fiscal year 2023 | 4,002 |  |
Fiscal year 2024 | 1,676 |  |
Fiscal year 2025 | 287 |  |
Thereafter | 839 |  |
Total expected amortization expense | 16,950 |  | 19,423
Intangible amortization | 2,473 | 4,160 |
Customer relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Fiscal year 2021 (remaining nine months) | 222 |  |
Fiscal year 2022 | 0 |  |
Fiscal year 2023 | 0 |  |
Fiscal year 2024 | 0 |  |
Fiscal year 2025 | 0 |  |
Thereafter | 0 |  |
Total expected amortization expense | 222 |  | $ 589
Intangible amortization | $ 367 | $ 983 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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