Goodwil, Long-lived Assets, and Other Charges (Tables)

12 Months Ended

Jan. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill by Reporting Segment

The changes in the carrying amount of goodwill by reporting unit are shown below:

	Applied Technology (excluding Autonomy)		Autonomy		Engineered Films		Aerostar		Total
Balance at January 31, 2018	$	12,741	$	—	$	33,232	$	737	$	46,710
Additions due to business combinations	4,559		—		—		—		4,559
Divestiture of business	—		—		—		(103)		(103)
Foreign currency translation adjustment	(224)		—		—		—		(224)
Balance at January 31, 2019	17,076		—		33,232		634		50,942
Additions due to business combinations	(33)		56,022		—		—		55,989
Foreign currency translation adjustment	(100)		(322)		—		—		(422)
Balance at January 31, 2020	$	16,943	$	55,700	$	33,232	$	634	$	106,509

Goodwill Gross of Impairment

Goodwill gross and net of accumulated impairment losses were as follows:

	As of January 31,
	2020		2019
Gross goodwill	$	118,006	$	62,439
Accumulated impairment loss	(11,497)		(11,497)
Net goodwill	$	106,509	$	50,942

Gross Carrying Amount and Related Accumulated Amortization of Definite-Lived Intangible Assets

The following table provides the gross carrying amount for intangible assets and the related accumulated amortization of definite-lived intangible assets:

	For the years ended January 31,
	2020						2019
			Accumulated						Accumulated
	Amount		amortization		Net		Amount		amortization		Net
Existing technology	$	9,190	$	(7,706)	$	1,484	$	9,203	$	(7,216)	$	1,987
Customer relationships	16,067		(6,868)		9,199		15,791		(5,508)		10,283
Patents and other intangibles	6,678		(2,444)		4,234		5,908		(1,885)		4,023
In-process research and development(a)	31,300		—		31,300		—		—		—
Total	$	63,235	$	(17,018)	$	46,217	$	30,902	$	(14,609)	$	16,293
(a) Refer to Note 6 "Acquisitions and Investments in Businesses and Technologies" for a more detailed description of these indefinite-lived intangible assets acquired in business combinations in fiscal 2020.

The Estimated Future Amortization Expense for Identifiable Intangible Assets

The estimated future amortization expense for these definite-lived intangible assets during the next five years is as follows:

	2021		2022		2023		2024		2025
Estimated amortization expense	$	2,497	$	2,443	$	2,334	$	1,852	$	1,824