Goodwill And Other Intangible Asset [Line Items]

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- Definition

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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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.

+ 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 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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- 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 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.

+ References

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- Definition

Amount after impairment of indefinite-lived intangible assets classified as other. Excludes financial assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2016
Goodwill And Other Intangible Asset [Line Items]
Other non-amortizable intangible assets	$ 14,938,000	$ 14,323,000
Amortization expense for intangible assets	6,743,000	$ 5,908,000	$ 4,730,000
Estimated amortization expense for period, 2019	6,179,000
Estimated amortization expense for period, 2020	5,865,000
Estimated amortization expense for period, 2021	5,435,000
Estimated amortization expense for period, 2022	5,048,000
Estimated amortization expense for period, 2023	$ 4,702,000
Finite lived intangible assets, useful life	11 years	11 years
Minimum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	5 years
Maximum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	25 years
Licenses
Goodwill And Other Intangible Asset [Line Items]
Other non-amortizable intangible assets	$ 569,000	$ 569,000
Licenses \| Minimum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	2 years
Licenses \| Maximum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	20 years
Trademarks
Goodwill And Other Intangible Asset [Line Items]
Other non-amortizable intangible assets	$ 12,989,000	12,530,000
Other Intangible Assets
Goodwill And Other Intangible Asset [Line Items]
Other non-amortizable intangible assets	$ 1,224,000	$ 1,224,000
Noncompete Agreements \| Minimum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	5 years
Noncompete Agreements \| Maximum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	13 years
Patents \| Minimum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	5 years
Patents \| Maximum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	25 years
Customer-based intangibles \| Minimum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	5 years
Customer-based intangibles \| Maximum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	20 years
Other products and service-related intangibles \| Minimum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	2 years
Other products and service-related intangibles \| Maximum
Goodwill And Other Intangible Asset [Line Items]
Finite lived intangible assets, useful life	20 years