The following table presents the change in goodwill by reportable segment for the six months ended January 2, 2021.

(1)	Includes accumulated impairment of $1,045,110 from fiscal 2009, $181,440 from fiscal 2018, $137,396 from fiscal 2019 and $118,731 from fiscal 2020.

The Company evaluates each quarter if facts and circumstances indicate that it is more likely than not that the fair value of its reporting units is less than their carrying value, which would require the Company to perform an interim goodwill impairment test. Indicators the Company evaluates to determine whether an interim goodwill impairment test is necessary include, but are not limited to, (i) a sustained decrease in share price or market capitalization as of any fiscal quarter end, (ii) changes in macroeconomic or industry environments, (iii) the results of and the amount of time passed since the last goodwill impairment test and (iv) the long-term expected financial performance of its reporting units. During the second quarter of fiscal 2021, the Company concluded that an interim goodwill impairment test was not required.

Intangible Assets

The following table presents the Company’s acquired intangible assets at January 2, 2021 and June 27, 2020, respectively.


	January 2, 2021						June 27, 2020
	Acquired		Accumulated		Net Book		Acquired		Accumulated		Net Book
	Amount		Amortization		Value		Amount⁽¹⁾		Amortization		Value

	(Thousands)
Customer related	$	325,799	$	(312,345)	$	13,454	$	300,937	$	(266,759)	$	34,178
Trade name		56,716		(40,161)		16,555		51,698		(32,493)		19,205
Technology and other		58,417		(49,614)		8,803		53,641		(41,587)		12,054
	$	440,932	$	(402,120)	$	38,812	$	406,276	$	(340,839)	$	65,437

⁽¹⁾Acquired amount reduced by impairment of $17,473 from fiscal 2020.

Intangible asset amortization expense was $10.4 million and $21.3 million for the second quarters of fiscal 2021 and 2020, respectively, and $30.5 million and $41.3 million for the first six months of fiscal 2021 and 2020, respectively. Intangible assets have a weighted average remaining useful life of approximately 3 years. The following table presents the estimated future amortization expense for the remainder of fiscal 2021 and the next five fiscal years (in thousands):


Fiscal Year
Remainder of fiscal 2021	$	10,440
2022		15,323
2023		6,607
2024		3,130
2025		1,472
2026		1,472
Thereafter		368
Total	$	38,812