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Income Taxes (Details) - Schedule of deferred income tax assets - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Deferred income tax assets:
Bad debt reserve	$ 854	$ 540
Accrued expenses	2,963	3,134
Stock options and restricted stock	1,226	866
Charitable contributions	659	734
Depreciation	(71)	151
Unrealized gain	(302)	(231)
Net operating loss	62,588	72,625
Transaction taxes		2,000
Deferred revenue	(705)	(1,060)
Total deferred income tax assets	67,212	78,759
Valuation allowance	(58,700)	(74,170)	$ (76,020)
NET DEFERRED INCOME TAX ASSETS	$ 8,512	$ 4,589

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