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Business Segments and International Operations (Narrative) (Details) $ in Thousands	12 Months Ended
	Nov. 30, 2020 USD ($) segment	Nov. 30, 2019 USD ($)	Nov. 30, 2018 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments | segment	3
Long-lived assets	$ 29,817	$ 29,765
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	22,800	25,700	$ 25,800
Outside United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 7,000	$ 4,100	$ 4,900

X

- Definition

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.

+ References

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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