Discontinued Operations (Details) $ in Thousands, € in Millions		3 Months Ended				9 Months Ended
		Dec. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2020 EUR (€)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments to Acquire Additional Interest in Subsidiaries		$ 10,000			$ 19,000
Disposition of subsidiary with noncontrolling interests(1)	[1]					$ 11,404
Proceeds from disposal of businesses						4,603	$ 19,505
Notes receivable and contingent consideration receivable acquired in connection with disposal of businesses						$ 8,549	$ 14,196
Stahlgruber Czech Republic Wholesale Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax			$ 1,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			48.20%	48.20%
Payments to Acquire Additional Interest in Subsidiaries | €				€ 8
Disposition of subsidiary with noncontrolling interests(1)			$ 11,000
Note issued to acquire noncontrolling interest | €				€ 4
Percentage of Business Sold			100.00%	100.00%
Proceeds from disposal of businesses | €				€ 14
Notes receivable and contingent consideration receivable acquired in connection with disposal of businesses | €				€ 7

[1] (1) The amount disposed of in 2020 relates to discontinued operations. See Note 2, "Discontinued Operations," for further information.