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Stock-Based Compensation (Details Textual) - USD ($)	1 Months Ended		12 Months Ended
	Oct. 18, 2017	Jan. 18, 2017	Jul. 31, 2017	Jul. 31, 2016
Stock-Based Compensation (Textual)
Proceeds from exercise of stock options			$ 166,000	$ 9,000
Granted fair value			$ 3.13
Non-vested shares of restricted stock			3,885
Class B common stock and DSUs [Member]
Stock-Based Compensation (Textual)
Shares issued			280,700
Restricted stock shares issued			17,349
Non-vested shares of restricted stock			359	53
Restricted Stock [Member]
Stock-Based Compensation (Textual)
Non-vested shares of restricted stock			49,474
Restricted Stock [Member] | Class B common stock and DSUs [Member]
Stock-Based Compensation (Textual)
Restricted stock shares issued			111,842
Deferred stock units			7,767
Stock options [Member]
Stock-Based Compensation (Textual)
Stock options exercisable upon vesting term			10 years
Expiration date				May 31, 2026
Stock option expiration extension, number of shares				900,000
Stock-based compensation expense				$ 123,000
Proceeds from exercise of stock options			$ 109,790
Intrinsic value of options			800,000	$ 100,000
Unrecognized compensation cost, non-vested stock options			$ 590,000
Stock options weighted average period			1 year 3 months 19 days
Stock option vesting period, description			Prior to the Spin-Off, historical grants generally vested ratably over a three to four-year period. Subsequent to the Spin-Off, grants generally vest over a three-year period.
Collection of receivable from stockholder for stock option exercise.			$ 56,840
2016 Stock Option and Incentive Plan [Member] | Subsequent Event [Member]
Stock-Based Compensation (Textual)
Stock available for grant of awards	350,000
2016 Stock Option and Incentive Plan [Member] | Class B common stock and DSUs [Member]
Stock-Based Compensation (Textual)
Share available for awards		691,000	487,000
Stock available for grant of awards		500,000

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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General descriptive information regarding an arrangement under which employees and directors receive: (a) awards of equity shares, equity share options, or other equity instruments; or (b) the entity incurs liabilities to them: (1) in amounts based, at least in part, on the price of the entity's shares or other equity instruments; or (2) that require or may require settlement by issuance of the entity's shares. Such an arrangement is usually provided to employees and directors to compensate them, provide performance incentives to them, and to attract or retain their services. May also include pertinent information particular to a plan that is not elsewhere specified in the taxonomy.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Date the equity-based award expires, in CCYY-MM-DD format.

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Number of additional shares authorized for issuance under an established share-based compensation plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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Weighted average grant-date fair value of options vested.

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Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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