Discontinued Operations (Details) $ in Thousands, € in Millions		3 Months Ended		6 Months Ended
		Mar. 31, 2020 USD ($)	Mar. 31, 2020 EUR (€)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition of subsidiary with noncontrolling interests(1)	[1]			$ 11,404
Proceeds from disposal of businesses				4,602	$ 0
Notes receivable and contingent consideration receivable acquired in connection with disposal of businesses				$ 8,549	$ 0
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.