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Equity Investments (Details) - USD ($)	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Sep. 24, 2020	Jun. 30, 2016
Equity Investments (Details) [Line Items]
Preferred share value	$ 8,833,000	$ 9,319,000
Carrying value of shares	206,000	826,000
August 1, 2018 [Member]
Equity Investments (Details) [Line Items]
Equity investment	1,200,000
AOCI Attributable to Parent [Member] | August 1, 2018 [Member]
Equity Investments (Details) [Line Items]
Equity investment	33,000
Accumulated deficit [Member] | August 1, 2018 [Member]
Equity Investments (Details) [Line Items]
Equity investment	$ 1,100,000
Visa Series C Convertible Participating Preferred Stock [Member]
Equity Investments (Details) [Line Items]
Owned shares			1,830	1,830
Convertible shares	13.722
Carrying value of shares	$ 200,000	$ 800,000
Visa Series A Convertible Participating Preferred Stock [Member] | Subsequent Event [Member]
Equity Investments (Details) [Line Items]
Owned shares			125
Convertible shares			6.861
Preferred share value			$ 4,400,000
Visa Series A Convertible Participating Preferred Stock [Member] | Visa Class A Common Stock [Member] | Subsequent Event [Member]
Equity Investments (Details) [Line Items]
Owned shares			12,500

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