Goodwill and Other Intangibles - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Nov. 30, 2019	Nov. 30, 2018	Aug. 31, 2019
Goodwill and Other Intangibles
Gross Carrying Value	$ 119,148		$ 118,566
Accumulated Amortization	69,301		65,862
Net Carrying Value	49,847		$ 52,704
Aggregate amortization expense	2,914	$ 3,113
Estimated amortization expense
2020 (remaining 9 months)	8,667
2021	11,051
2022	10,031
2023	6,768
2024	5,659
2025	$ 5,552
Patents and agreements
Goodwill and Other Intangibles
Weighted-Average Amortization Period	14 years 7 months 6 days		14 years 7 months 6 days
Gross Carrying Value	$ 1,760		$ 1,760
Accumulated Amortization	1,696		1,693
Net Carrying Value	$ 64		$ 67
Formulas and technology
Goodwill and Other Intangibles
Weighted-Average Amortization Period	7 years 9 months 18 days		7 years 9 months 18 days
Gross Carrying Value	$ 10,217		$ 10,164
Accumulated Amortization	8,309		7,969
Net Carrying Value	$ 1,908		$ 2,195
Trade names
Goodwill and Other Intangibles
Weighted-Average Amortization Period	5 years 9 months 18 days		5 years 9 months 18 days
Gross Carrying Value	$ 8,548		$ 8,503
Accumulated Amortization	7,418		7,261
Net Carrying Value	$ 1,130		$ 1,242
Customer lists and relationships
Goodwill and Other Intangibles
Weighted-Average Amortization Period	9 years 1 month 6 days		9 years 1 month 6 days
Gross Carrying Value	$ 98,623		$ 98,139
Accumulated Amortization	51,878		48,939
Net Carrying Value	$ 46,745		$ 49,200

Represents the weighted-average amortization period of intangible assets.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during 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.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the 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.

+ References

No definition available.

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth 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.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth 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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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third 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.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during 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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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 340
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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