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13. SEGMENT REPORTING (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Sales, net $ 4,445,000us-gaap_SalesRevenueNet $ 4,046,000us-gaap_SalesRevenueNet $ 3,693,000us-gaap_SalesRevenueNet $ 2,972,000us-gaap_SalesRevenueNet $ 3,577,000us-gaap_SalesRevenueNet $ 3,044,000us-gaap_SalesRevenueNet $ 3,609,000us-gaap_SalesRevenueNet $ 3,042,000us-gaap_SalesRevenueNet $ 15,156,159us-gaap_SalesRevenueNet $ 13,271,914us-gaap_SalesRevenueNet
Cost of Sales                 6,139,553us-gaap_CostOfGoodsAndServicesSold 5,588,439us-gaap_CostOfGoodsAndServicesSold
Gross Margin 2,554,000us-gaap_GrossProfit 2,500,000us-gaap_GrossProfit 2,241,000us-gaap_GrossProfit 1,722,000us-gaap_GrossProfit 2,023,000us-gaap_GrossProfit 1,759,000us-gaap_GrossProfit 2,144,000us-gaap_GrossProfit 1,757,000us-gaap_GrossProfit 9,016,606us-gaap_GrossProfit 7,683,475us-gaap_GrossProfit
Selling Expenses                 3,719,761us-gaap_SellingExpense 3,079,060us-gaap_SellingExpense
Contribution Margin                 5,296,845WVVI_ContributionMargin 4,604,415WVVI_ContributionMargin
Percent of Sales                 100.00%WVVI_PercentOfSales 100.00%WVVI_PercentOfSales
Direct Sales                    
Sales, net                 5,197,121us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
3,768,963us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
Cost of Sales                 1,307,687us-gaap_CostOfGoodsAndServicesSold
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
989,262us-gaap_CostOfGoodsAndServicesSold
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
Gross Margin                 3,889,434us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
2,779,701us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
Selling Expenses                 2,435,865us-gaap_SellingExpense
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
1,757,128us-gaap_SellingExpense
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
Contribution Margin                 1,453,569WVVI_ContributionMargin
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
1,022,573WVVI_ContributionMargin
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
Percent of Sales                 34.30%WVVI_PercentOfSales
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
28.40%WVVI_PercentOfSales
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DirectSalesMember
Distributor Sales                    
Sales, net                 9,959,038us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
9,502,951us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
Cost of Sales                 4,831,866us-gaap_CostOfGoodsAndServicesSold
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
4,599,177us-gaap_CostOfGoodsAndServicesSold
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
Gross Margin                 5,127,172us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
4,903,774us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
Selling Expenses                 1,283,896us-gaap_SellingExpense
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
1,321,932us-gaap_SellingExpense
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
Contribution Margin                 $ 3,843,276WVVI_ContributionMargin
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
$ 3,581,842WVVI_ContributionMargin
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
Percent of Sales                 65.70%WVVI_PercentOfSales
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember
71.60%WVVI_PercentOfSales
/ us-gaap_StatementBusinessSegmentsAxis
= WVVI_DistributorSalesMember