Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Finite-Lived Intangible Assets [Line Items]
Divestiture	$ 7,900	$ 3,394	$ 7,888
Amortization of intangible assets		12,399	17,124	$ 17,034
Impairment loss on long lived assets		0	9,157	$ 810
Finite-Lived Intangible Assets, Net	98,474	83,891	98,474
Indefinite-lived trade names	3,400	$ 3,400	3,400
Nuclear Logistics Business [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment loss on long lived assets			14,600
Finite-Lived Intangible Assets, Net	$ 7,200		$ 7,200

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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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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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

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