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Intangibles, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Amortized intangible assets:
Gross Carrying Amount	$ 75,278	$ 81,865
Accumulated Amortization	(29,405)	(34,093)
Intangibles, net	45,873	47,772
Supply contracts and customer relationships
Amortized intangible assets:
Gross Carrying Amount	55,598	50,600
Accumulated Amortization	(21,739)	(16,780)
Intangibles, net	$ 33,859	$ 33,820
Useful life of intangible assets	7 years	8 years
Trade names
Amortized intangible assets:
Gross Carrying Amount	$ 18,944	$ 23,635
Accumulated Amortization	(7,163)	(10,075)
Intangibles, net	$ 11,781	$ 13,560
Useful life of intangible assets	6 years	6 years
Licenses and databases
Amortized intangible assets:
Gross Carrying Amount	$ 736	$ 7,630
Accumulated Amortization	(503)	(7,238)
Intangibles, net	$ 233	$ 392
Useful life of intangible assets	2 years	3 years

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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