Goodwill and Intangible Assets (Tables)

9 Months Ended

Oct. 27, 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 October 27, 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 (1) (2)	—		8,500		4,778		13,278
Balance at October 28, 2018	$	274,085	$	76,312	$	4,778	$	355,175

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:

		October 27, 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	$	83,088	$	(62,674	)	$	20,414	$	167,930	$	(136,544	)	$	31,386
Customer relationships	3-10 years	6,000		(4,978		)	1,022		34,031		(31,159		)	2,872
Total finite-lived intangible assets		$	89,088	$	(67,652	)	$	21,436	$	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				Nine Months Ended
(in thousands)	October 27, 2019		October 28, 2018		October 27, 2019		October 28, 2018
Core technologies	$	3,337	$	5,047	$	10,971	$	15,622
Customer relationships	433		1,433		1,850		4,299
Total amortization expense	$	3,770	$	6,480	$	12,821	$	19,921

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 three months)	$	3,267	$	433	$	3,700
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	$	20,414	$	1,022	$	21,436

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 October 27, 2019	$	2,300