Equity (Details Textual) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
Aug. 31, 2019 USD ($) shares	Nov. 15, 2018 USD ($) $ / shares	Jan. 31, 2020 USD ($) Nonemployeedirectors shares
Total unrecognized non-vested stock-based compensation			$ 1,500
Vesting expected term			2 years 4 months 24 days
Number of options, cancelled shares \| shares			259
Numbet of non non-employee directors \| Nonemployeedirectors			3
Class B common stock
Conversion of common stock		$ 15,000
Conversion of common stock price per share \| $ / shares		$ 8.47
Debt instrument interest percent		6.00%
Common stock conversion term		3 years
Interest expense	$ 667,000
Conversion of common stock shares \| shares	1,849,749
Restricted shares granted \| shares			4,203
Fair value of restricted shares			$ 208,000

Common stock conversion term.

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- Definition

Numbet of non employee directors

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- Definition

Sharebased compensation arrangement by sharebased payment award restricted shares vesting expected term.

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No definition available.

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The value of the financial instrument issued [noncash or part noncash] in the conversion of stock. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Dividend or interest rate associated with the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction. Noncash are transactions that affect recognized assets or liabilities but that do not result in cash receipts or cash payments. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Interest and debt related expenses associated with nonoperating financing activities of the entity.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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- Definition

Number of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit plan.

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