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Note 7 - Commitments and Contingencies (Details) (USD $)
1 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2008
Note 7 - Commitments and Contingencies (Details) [Line Items]          
Due to Employees   $ 4,956,000us-gaap_DueToEmployeesCurrentAndNoncurrent      
Employment Agreement Non-Compete Term Minimum   6 months      
Employment Agreement Non-Compete Term Maximum   1 year      
Compensation 454,000us-gaap_SalariesAndWages        
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability 454,000us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1        
Scenario, Invoking Non-Compete Provisions [Member]          
Note 7 - Commitments and Contingencies (Details) [Line Items]          
Due to Employees   4,115,000us-gaap_DueToEmployeesCurrentAndNoncurrent
/ us-gaap_FairValueByLiabilityClassAxis
= whlm_ScenarioInvokingNonCompeteProvisionsMember
     
Minimum [Member]          
Note 7 - Commitments and Contingencies (Details) [Line Items]          
Employment Agreement Term   1 year      
Maximum [Member]          
Note 7 - Commitments and Contingencies (Details) [Line Items]          
Employment Agreement Term   2 years      
Foreign Withholding Claims 2006 and 2008 [Member]          
Note 7 - Commitments and Contingencies (Details) [Line Items]          
Loss Contingency, Estimate of Possible Loss       726,000us-gaap_LossContingencyEstimateOfPossibleLoss
/ whlm_TaxLiabilityAxis
= whlm_ForeignWithholdingClaims2006And2088Member
 
Foreign Withholding Claims [Member]          
Note 7 - Commitments and Contingencies (Details) [Line Items]          
Loss Contingency, Estimate of Possible Loss         197,000us-gaap_LossContingencyEstimateOfPossibleLoss
/ whlm_TaxLiabilityAxis
= whlm_ForeignWithholdingClaimsMember
Loss Contingency, Loss in Period     223,000us-gaap_LossContingencyLossInPeriod
/ whlm_TaxLiabilityAxis
= whlm_ForeignWithholdingClaimsMember
   
Penalties and Interest [Member]          
Note 7 - Commitments and Contingencies (Details) [Line Items]          
Loss Contingency, Loss in Period     $ 26,000us-gaap_LossContingencyLossInPeriod
/ whlm_TaxLiabilityAxis
= whlm_PenaltiesAndInterestMember