Goodwill and Intangible Assets (Tables)

6 Months Ended

Jan. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets all in the life sciences products segment

	Gross			Accumulated Amortization			Net
July 31, 2021	$	27,775		$	(27,531	)	$	244
Amortization expense		—			(140	)		(140	)
Foreign currency translation		(216	)		212			(4	)
January 31, 2022	$	27,559		$	(27,459	)	$	100

Schedule of intangible assets, all finite-lived

	January 31, 2022							July 31, 2021
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
Patents	$	11,027	$	(11,027	)	$	—	$	11,027		(11,027	)	$	—
Customer relationships		11,940		(11,840	)		100		12,059		(11,815	)		244
Website and acquired content		1,019		(1,019	)		—		1,025		(1,025	)		—
Licensed technology and other		488		(488	)		—		494		(494	)		—
Trademarks		3,085		(3,085	)		—		3,170		(3,170	)		—
Total	$	27,559	$	(27,459	)	$	100	$	27,775		(27,531	)	$	244

Schedule of information with respect to acquired intangibles

	Useful life assigned	Weighted average remaining useful life
Customer relationships	8 -15 years	0.5 years