Goodwill and Intangible Assets (Tables)

6 Months Ended

Jul. 28, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amounts of Goodwill

Changes in the carrying amount of goodwill by applicable reporting unit were as follows:

(in thousands)	Signal Integrity		Wireless and Sensing		Protection		Total
Balance at January 27, 2019	$	274,085	$	72,128	$	4,928	$	351,141
Additions	—		—		—		—
Balance at July 28, 2019	$	274,085	$	72,128	$	4,928	$	351,141

(in thousands)	Signal Integrity		Wireless and Sensing		Protection		Total
Balance at January 28, 2018	$	274,085	$	67,812	$	—	$	341,897
Additions	—		—		4,834		4,834
Balance at July 29, 2018	$	274,085	$	67,812	$	4,834	$	346,731

Schedule of Finite-lived Intangible Assets Acquired

The following table sets forth the Company’s finite-lived intangible assets resulting from business acquisitions, which continue to be amortized:

		July 28, 2019							January 27, 2019
(in thousands)	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core technologies	5-8 years	$	88,088	$	(64,337	)	$	23,751	$	167,930	$	(136,544	)	$	31,386
Customer relationships	3-10 years	6,001		(4,546		)	1,455		34,031		(31,159		)	2,872
Total finite-lived intangible assets		$	94,089	$	(68,883	)	$	25,206	$	201,961	$	(167,703	)	$	34,258

 

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

	Three Months Ended				Six Months Ended
(in thousands)	July 28, 2019		July 29, 2018		July 28, 2019		July 29, 2018
Core technologies	$	3,475	$	5,047	$	7,634	$	10,575
Customer relationships	433		1,433		1,417		2,866
Total amortization expense	$	3,908	$	6,480	$	9,051	$	13,441

Schedule of Future Amortization of Intangible Asset

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

(in thousands)
Fiscal Year Ending:	Core Technologies		Customer Relationships		Total
2020 (remaining six months)	$	6,604	$	866	$	7,470
2021	7,389		589		7,978
2022	4,655		—		4,655
2023	3,714		—		3,714
2024	1,389		—		1,389
Thereafter	—		—		—
Total expected amortization expense	$	23,751	$	1,455	$	25,206

Schedule of Indefinite-Lived Intangible Assets

The following table sets forth the Company’s indefinite-lived intangible assets resulting from additions to in-process research and development:

(in thousands)	Net Carrying Value
Value at January 27, 2019	$	2,300
In-process research and development through acquisitions	—
Value at July 28, 2019	$	2,300