Revenue (Narrative) (Details)	3 Months Ended	12 Months Ended
Nov. 30, 2019 USD ($) segment	Aug. 31, 2019 USD ($)
Accrued sales returns	$ 5,440,000	$ 5,432,000
Accrued sales incentives	17,793,000	14,770,000
Prepaid sales incentives	2,424,000	2,788,000
Performance obligation	0	0
Contract assets	0	0
Contract liabilities	$ 0	$ 0
Number of operating segments \| segment	1
Number of reportable segments \| segment	1
Maximum [Member]
Payment term	1 year

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- Definition

Revenue, Performance Obligation, Payment Terms

+ References

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- Definition

Revenue recognition, Prepaid sales incentives

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- Definition

Accrued sales incentives.

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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No definition available.

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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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