Commitments and Contingencies (Narrative) (Details) $ in Millions	1 Months Ended			12 Months Ended
	Aug. 31, 2020 USD ($)	Oct. 31, 2019 USD ($)	Oct. 31, 2017 winery	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Operating Leased Assets [Line Items]
Base rent expense				$ 0.2	$ 0.3
Rent expense related to lease liability				0.2	0.2
Cash paid for operating lease liabilities				0.2	0.3
Amounts purchased under agreements				4.7	7.6
Number of wineries affected by wildfires (in wineries) | winery			2
Related Party
Operating Leased Assets [Line Items]
Amounts purchased under agreements				0.1	$ 0.6
Natural Disasters and Other Casualty Events
Operating Leased Assets [Line Items]
Insurance proceeds	$ 0.1	$ 0.2				$ 1.1
Inventory losses				$ 3.5
Natural Disasters and Other Casualty Events | Cost of Sales
Operating Leased Assets [Line Items]
Insurance proceeds						0.6
Natural Disasters and Other Casualty Events | Other Income, Net
Operating Leased Assets [Line Items]
Insurance proceeds						$ 0.5