Debt and Capital Lease Obligations (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jul. 31, 2018
Long-term debt and capital lease obligations [Abstract]
Total	$ 54	$ 108
Current portion of long-term debt and capital lease obligations	(41)	(54)
Long-term debt and capital lease obligations	13	54
Long-term Debt, by Maturity [Abstract]
2020	41
2021	13
Total	54	108
Bank Loan [Member]
Long-term debt and capital lease obligations [Abstract]
Total	$ 17	28
Interest rate	3.86%
Long-term Debt, by Maturity [Abstract]
Total	$ 17	28
Capital Lease Obligations [Member]
Long-term debt and capital lease obligations [Abstract]
Total	37	80
Long-term Debt, by Maturity [Abstract]
Total	$ 37	$ 80
Capital Lease Obligations [Member] \| Minimum [Member]
Long-term debt and capital lease obligations [Abstract]
Interest rate	4.80%
Capital Lease Obligations [Member] \| Maximum [Member]
Long-term debt and capital lease obligations [Abstract]
Interest rate	17.07%

Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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Amount of long-term debt and lease obligation, classified as noncurrent.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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