Goodwill and Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill balances

The carrying amounts of goodwill by applicable reporting unit were as follows:

(in thousands)	Signal Integrity		Wireless and Sensing		Protection		Total
Balance at January 26, 2020	$	274,085	$	72,128	$	4,928	$	351,141
Balance at January 31, 2021	$	274,085	$	72,128	$	4,928	$	351,141

Schedule of finite-lived intangible assets which continue to be amortized

The following table sets forth the Company’s finite-lived intangible assets resulting from business acquisitions and technology licenses purchased, which are amortized over their estimated useful lives:

		January 31, 2021						January 26, 2020
(in thousands)	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Core technologies	3-8 years	$	29,300	$	(17,554)	$	11,746	$	82,857	$	(63,434)	$	19,423
Customer relationships		—		—		—		6,000		(5,411)		589
Total finite-lived intangible assets		$	29,300	$	(17,554)	$	11,746	$	88,857	$	(68,845)	$	20,012

Schedule of amortization expenses recorded in the Statements of Income

Amortization expense of finite-lived intangible assets recorded in the Statements of Income for each period was as follows:

(in thousands)	January 31, 2021		January 26, 2020		January 27, 2019
Core technologies	$	7,676	$	14,263	$	20,916
Customer relationships	589		2,283		5,733
Total amortization expense	$	8,265	$	16,546	$	26,649

Schedule of future amortization expense

Future amortization expense of finite-lived intangible assets is expected as follows:

(in thousands)
To be recognized in:	Total
Fiscal year 2022	$	4,942
Fiscal year 2023	4,002
Fiscal year 2024	1,676
Fiscal year 2025	288
Fiscal year 2026	288
Thereafter	550
Total expected amortization expense	$	11,746