Schedule of Balance of Assets Measured at Fair Value On a Recurring Basis (Details) - USD ($) $ in Thousands		Apr. 30, 2022	Jul. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities		$ 22,706	$ 14,012
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities		22,706	14,012
Equity investments included in current assets		16,179	42,434
Equity investments included in noncurrent assets		2,131	2,465
Total		41,016	58,911
Acquisition consideration included in other current liabilities		(2,578)	(628)
Acquisition consideration included in other noncurrent liabilities		(5,970)	(397)
Acquisition consideration included in other liabilities		(8,548)	(1,025)
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	[1]	10,885	1,652
Equity investments included in current assets	[1]	16,179	40,225
Equity investments included in noncurrent assets	[1]
Total	[1]	27,064	41,877
Acquisition consideration included in other current liabilities	[1]
Acquisition consideration included in other noncurrent liabilities	[1]
Acquisition consideration included in other liabilities	[1]
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	[2]	11,821	12,360
Equity investments included in current assets	[2]		2,209
Equity investments included in noncurrent assets	[2]
Total	[2]	11,821	14,569
Acquisition consideration included in other current liabilities	[2]
Acquisition consideration included in other noncurrent liabilities	[2]
Acquisition consideration included in other liabilities	[2]
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	[3]
Equity investments included in current assets	[3]
Equity investments included in noncurrent assets	[3]	2,131	2,465
Total	[3]	2,131	2,465
Acquisition consideration included in other current liabilities	[3]	(2,578)	(628)
Acquisition consideration included in other noncurrent liabilities	[3]	(5,970)	(397)
Acquisition consideration included in other liabilities	[3]	$ (8,548)	$ (1,025)

[1] – quoted prices in active markets for identical assets or liabilities

[2] – observable inputs other than quoted prices in active markets for identical assets and liabilities

[3] – no observable pricing inputs in the market