Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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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.

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Goodwill and Other Intangible Assets (Goodwill) (Narrative) (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021 USD ($) segment	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Goodwill [Line Items]
Number of reportable segments \| segment	7
Impairment of goodwill				$ 26,686
Impairment of goodwill and other long-lived assets	$ 26,753	$ 1,916		31,568	$ 29,828
Manufacturing [Member]
Goodwill [Line Items]
Impairment of goodwill				26,686
Education [Member]
Goodwill [Line Items]
Impairment of goodwill				0
Other Businesses [Member]
Goodwill [Line Items]
Impairment of goodwill				0
Automotive [Member]
Goodwill [Line Items]
Impairment of goodwill				$ 0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 6,700
Dekko [Member] \| Manufacturing [Member]
Goodwill [Line Items]
Impairment of goodwill	$ 26,700
Clyde's Restaurant Group [Member] \| Other Businesses [Member]
Goodwill [Line Items]
Impairment of goodwill and other intangible assets			$ 9,700