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

12 Months Ended

Jan. 31, 2021

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 operating segment are shown below:

	Applied Technology		Engineered Films		Aerostar		Total
Balance at January 31, 2019	$	17,076	$	33,232	$	634	$	50,942
Additions due to business combinations	55,989		—		—		55,989
Foreign currency translation adjustment	(422)		—		—		(422)
Balance at January 31, 2020	72,643		33,232		634		106,509
Measurement period adjustments	(440)		—		—		(440)
Foreign currency translation adjustment	1,608		—		—		1,608
Balance at January 31, 2021	$	73,811	$	33,232	$	634	$	107,677

Goodwill Gross of Impairment

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

	As of January 31,
	2021		2020
Gross goodwill	$	119,174	$	118,006
Accumulated impairment loss	(11,497)		(11,497)
Net goodwill	$	107,677	$	106,509

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,
	2021						2020
			Accumulated amortization						Accumulated amortization
	Amount				Net		Amount				Net
Existing technology	$	9,263	$	(8,304)	$	959	$	9,190	$	(7,706)	$	1,484
Customer relationships	16,128		(8,248)		7,880		16,067		(6,868)		9,199
Patents and other intangibles	7,297		(3,126)		4,171		6,678		(2,444)		4,234
In-process research and development(a)	31,575		—		31,575		31,300		—		31,300
Total	$	64,263	$	(19,678)	$	44,585	$	63,235	$	(17,018)	$	46,217
(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. A portion of these intangible assets are denominated in a foreign currency and subject to exchange rate fluctuations.

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:

	2022		2023		2024		2025		2026
Estimated amortization expense	$	2,498	$	2,389	$	1,907	$	1,878	$	1,582