VIE’s Summarized Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Jul. 31, 2021
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cash and equivalents	$ 97,139	$ 107,147
Trade accounts receivable, net	52,881	46,644
Prepaid expenses	16,676	13,694
Other current assets	27,442	16,779
Property, plant, and equipment, net	33,447	30,829
Other intangibles, net	10,041	7,578
Total assets	503,270	512,655
Trade accounts payable	27,817	24,502
Accrued expenses	118,285	129,085
Other current liabilities	35,103	27,930
Accumulated other comprehensive income (loss)	(11,341)	(10,183)
Noncontrolling interests	2,523	1,750
Total liabilities and noncontrolling interests	503,270	512,655
Variable Interest Entity, Primary Beneficiary [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cash and equivalents	1,570	1,364
Restricted cash	4,896	3,848
Trade accounts receivable, net	29	91
Prepaid expenses	91	344
Other current assets	1,160	858
Due from the Company	87
Property, plant, and equipment, net	520	637
Other intangibles, net	927	1,042
Total assets	9,280	8,184
Trade accounts payable	2	312
Accrued expenses	46	26
Other current liabilities	5,792	4,491
Due to the Company		8
Accumulated other comprehensive income (loss)	14	(7)
Noncontrolling interests	3,426	3,354
Total liabilities and noncontrolling interests	$ 9,280	$ 8,184