Intangible Assets (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Oct. 30, 2019	Jul. 31, 2019
Gross Carrying Value	$ 2,470		$ 2,470
Accumulated Amortization	(733,606)		(638,749)
Net Carrying Amount	1,736		1,832
Goodwill, Indefinite, Gross Carrying Value	810		810
Goodwill, Indefinite, Accumulated Amortization
Goodwill, Indefinite, Net Carrying Amount	810,353		810,353
Balance, Gross Carrying Value	3,280,353		3,280,353
Balance, Accumulated Amortization	(733,606)		(638,749)
Balance, Net Carrying Amount	2,546,748		2,641,605
NetSapiens - license [Member]
Gross Carrying Value	150		150
Accumulated Amortization	(150)		(150)
Net Carrying Amount
Customer relationships [Member]
Gross Carrying Value	40		40
Accumulated Amortization	(14,676)		(12,672)
Net Carrying Amount	25,328		27,328
Customer relationships one [Member]
Gross Carrying Value	1,480		1,480
Accumulated Amortization	(328,934)		(276,077)
Net Carrying Amount	$ 1,151,066		1,203,923
Marketing & Non-compete [Member]
Gross Carrying Value		$ 800	800
Accumulated Amortization		(240)	(200)
Net Carrying Amount		$ 560	$ 600