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Goodwill and Intangible Assets - Narrative (Details)		3 Months Ended		9 Months Ended
	Dec. 31, 2020 USD ($)	Feb. 28, 2021 USD ($)	Feb. 29, 2020 USD ($)	Feb. 28, 2021 USD ($) unit	Feb. 29, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Number of reporting units | unit				1
Goodwill impairment	$ 0
Amortization of intangibles		$ 4,292,000	$ 5,019,000	$ 13,838,000	$ 13,417,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill				2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill				18 years

X

- 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.

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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.

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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 of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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