Goodwill and Intangible Assets (Tables)

3 Months Ended

Apr. 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 April 28, 2019	$	274,085	$	72,128	$	4,928	$	351,141

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:

		April 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	$	167,930	$	(140,704	)	$	27,226	$	167,930	$	(136,544	)	$	31,386
Customer relationships	3-10 years	34,031		(32,142		)	1,889		34,031		(31,159		)	2,872
Total finite-lived intangible assets		$	201,961	$	(172,846	)	$	29,115	$	201,961	$	(167,703	)	$	34,258

 

Amortization expenses recorded in the Statements of Income for each period were as follows:

	Three Months Ended
(in thousands)	April 28, 2019		April 29, 2018
Core technologies	$	4,160	$	5,528
Customer relationships	983		1,433
Total amortization expense	$	5,143	$	6,961

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 April 28, 2019	$	2,300