Goodwill and Intangible Assets, Net

During the first quarter of fiscal 2019, the Company revised the composition of its reportable segments as a result of certain organizational changes (Refer to Note 18 for details). Goodwill was reallocated between the two reportable segments using a relative fair value approach. As a result, the Company completed assessments of any potential goodwill impairment for all reportable segments immediately prior to and after the reallocation and determined that no impairment existed.

Goodwill balances by reportable segment as of September 30, 2018 and April 1, 2018 are as follows:



	Reportable Segments
(in thousands)	Communications			Computing, Consumer and Industrial		Total
Balance as of April 1, 2018	$	141,300		$	278,817	$	420,117
Reallocation of goodwill	(21,206		)	21,206		—
Balance as of September 30, 2018	$	120,094		$	300,023	$	420,117

Goodwill balances as of September 30, 2018 and April 1, 2018 were net of $920.3 million in accumulated impairment losses. Intangible asset balances as of September 30, 2018 and April 1, 2018 are summarized as follows:



	September 30, 2018
(in thousands)	Gross Assets		Accumulated Amortization			Net Assets
Purchased intangible assets:
Developed technology	$	339,521	$	(236,496	)	$	103,025
Trademarks	5,391		(5,391		)	—
Customer relationships	201,997		(155,501		)	46,496
Intellectual property licenses	7,500		(4,500		)	3,000
Software licenses	20,894		(2,411		)	18,483
Total amortizable purchased intangible assets	575,303		(404,299		)	171,004
In-process research and development (IPR&D)	3,882		—			3,882
Total purchased intangible assets	$	579,185	$	(404,299	)	$	174,886



	April 1, 2018
(in thousands)	Gross Assets		Impairment			Accumulated Amortization			Net Assets
Purchased intangible assets:
Developed technology	$	336,402	$	—		$	(223,882	)	$	112,520
Trademarks	5,391		—			(5,391		)	—
Customer relationships	201,997		—			(149,416		)	52,581
Intellectual property licenses	7,500		—			(3,901		)	3,599
Software licenses	6,023		—			(943		)	5,080
Total amortizable purchased intangible assets	557,313		—			(383,533		)	173,780
In-process research and development (IPR&D)	9,017		(2,016		)	—			7,001
Total purchased intangible assets	$	566,330	$	(2,016	)	$	(383,533	)	$	180,781

During the three months ended September 30, 2018, the Company purchased $14.7 million of software licenses.

Amortization expense for the three months ended September 30, 2018 and October 1, 2017 was $10.7 million and $9.9 million, respectively. Amortization expense for the six months ended September 30, 2018 and October 1, 2017 was $20.8 million and $21.6 million, respectively. In the six months ended October 1, 2017, the Company recorded an accelerated amortization charge of $2.0 million related to certain software licenses as the estimated future cash flows expected resulting from the use of the assets were less than the carrying amount.

The intangible assets are being amortized over estimated useful lives of 1 to 7 years.

Based on the intangible assets recorded as of September 30, 2018, the expected future amortization expense for intangible assets is as follows (in thousands):



Fiscal Year	Amount
2019 (Remaining 6 months)	$	22,585
2020	45,812
2021	44,856
2022	39,595
2023 and thereafter	18,156
Total amortizable purchased intangible assets	171,004
IPR&D	3,882
Total intangible assets	$	174,886