Goodwill and other intangible assets

9 Months Ended

Jul. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill for the nine months ended July 31, 2022 by operating segment were as follows:


	Industrial Precision Solutions		Advanced Technology Solutions		Total
Balance at October 31, 2021	$	415,020	$	1,298,128	$	1,713,148
Acquisitions	129,856		—		129,856
Currency effect	(19,711)		(10,059)		(29,770)
Balance at July 31, 2022	$	525,165	$	1,288,069	$	1,813,234

The increase in goodwill for the nine months ended July 31, 2022 was due to the acquisition of NDC. See Acquisitions Note for additional details.

Information regarding our intangible assets subject to amortization was as follows:


	July 31, 2022
	Carrying Amount		Accumulated Amortization		Net Book Value
Customer relationships	$	483,127	$	244,893	$	238,234
Patent/technology costs	159,284		94,711		64,573
Trade name	83,368		43,514		39,854
Non-compete agreements	10,358		9,245		1,113
Other	422		417		5
Total	$	736,559	$	392,780	$	343,779

	October 31, 2021
	Carrying Amount		Accumulated Amortization		Net Book Value
Customer relationships	$	483,815	$	226,658	$	257,157
Patent/technology costs	154,267		89,299		64,968
Trade name	74,301		39,858		34,443
Non-compete agreements	9,896		9,099		797
Other	1,385		1,383		2
Total	$	723,664	$	366,297	$	357,367

Amortization expense for the three months ended July 31, 2022 and 2021 was $12,709 and $12,681, respectively. Amortization expense for the nine months ended July 31, 2022 and 2021 was $38,366 and $38,378, respectively. See Acquisitions Note for details regarding intangibles recorded due to the acquisition of NDC.