Goodwill and Intangible Assets (Tables)

9 Months Ended

Apr. 30, 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		—			(210	)		(210	)
Foreign currency translation		(534	)		529			(5	)
April 30, 2022	$	27,241		$	(27,212	)	$	29

Schedule of intangible assets, all finite-lived

	April 30, 2022							July 31, 2021
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
Patents	$	11,027	$	(11,027	)	$	—	$	11,027		(11,027	)	$	—
Customer relationships		11,768		(11,739	)		29		12,059		(11,815	)		244
Website and acquired content		1,008		(1,008	)		—		1,025		(1,025	)		—
Licensed technology and other		476		(476	)		—		494		(494	)		—
Trademarks		2,962		(2,962	)		—		3,170		(3,170	)		—
Total	$	27,241	$	(27,212	)	$	29	$	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	0.25 years