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Goodwill, Long-lived Assets and Other Intangibles Goodwill, Long-lived Assets and Other Intangibles (Notes)
 6 Months Ended
Jul. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Impairment Loss and Other Charges GOODWILL, LONG-LIVED ASSETS, AND OTHER CHARGES
Goodwill
Management assesses goodwill for impairment annually during the fourth quarter and between annual tests whenever a triggering event indicates there may be an impairment. Impairment tests of goodwill are done at the reporting unit level. There were no goodwill impairment losses reported in the three- and six-month periods ended July 31, 2021 and 2020, respectively.

The changes in the carrying amount of goodwill by reporting segment were as follows:
Applied TechnologyEngineered
Films		AerostarTotal
Balance at January 31, 2021
$73,811 $33,232 $634 $107,677 
Foreign currency translation adjustment
897 — — 897 
Balance at July 31, 2021
$74,708 $33,232 $634 $108,574 

Long-lived assets, including definite-lived intangibles
The Company assesses the recoverability of long-lived assets, including definite-lived intangibles and property, plant, and equipment, if events or changes in circumstances indicate that an asset might be impaired. There were no impairment charges in the three- and six-month periods ended July 31, 2021 and July 31, 2020, respectively.

Indefinite-lived intangible assets
Indefinite-lived intangible assets relate to in-process R&D (IPR&D) and are capitalized and subject to annual impairment testing using a fair-value based test. Amortization of the IPR&D will start when the current in-process research and development project is complete and the product is commercialized. Amortization of the IPR&D will be on a straight-line basis over the remaining estimated useful lives of these assets. The IPR&D project for OMNiDRIVE™ was commercialized during the current quarter and $6,400 of acquired IPR&D was placed in service and reclassified to "Existing Technology." These costs are being amortized over a 7 year useful life.

The following table summarizes the components of intangible assets, which are reported net on the Consolidated Balance Sheets:
July 31, 2021January 31, 2021
AccumulatedAccumulated
AmountamortizationNetAmountamortizationNet
Existing technology$15,639 $(8,607)$7,032 $9,263 $(8,304)$959 
Customer relationships16,113 (8,903)7,210 16,128 (8,248)7,880 
Software development1,439 — 1,439 — — — 
Patents and other intangibles
9,381 (3,369)6,012 7,297 (3,126)4,171 
In-process research and development(a)
25,777 — 25,777 31,575 — 31,575 
Total$68,349 $(20,879)$47,470 $64,263 $(19,678)$44,585 
(a) A portion of these intangible assets are denominated in a foreign currency and subject to exchange rate fluctuations.

The estimated future amortization expense for these definite-lived intangible assets during the next five years is as follows:
Remainder of 202220232024202520262027 and Thereafter
Estimated amortization expense$1,675 $3,257 $2,771 $2,762 $2,494 $7,296 

The estimated future amortization expense table above does not reflect the expected amortization associated with indefinite-lived in-process R&D assets for R&D projects not completed and capitalized software development costs not available for release to the public. Amortization of these indefinite-lived intangible assets will start upon completion of the current R&D projects, on a straight-line basis over their remaining estimated useful life. The applicable table will be updated at such time these intangible assets are placed into service.