v3.26.1
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 21 Months Ended 60 Months Ended 120 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2026
Without Sales Load [Member] | C000012182        
Average Annual Return [Line Items]        
Average Annual Return, Percent 23.70%   12.56% 12.08%
Without Sales Load [Member] | C000012186        
Average Annual Return [Line Items]        
Average Annual Return, Percent 25.65%   6.63% 11.33%
Without Sales Load [Member] | C000012187        
Average Annual Return [Line Items]        
Average Annual Return, Percent 56.22%   4.99% 11.39%
Without Sales Load [Member] | C000012190        
Average Annual Return [Line Items]        
Average Annual Return, Percent 36.99%   8.88% 13.06%
Without Sales Load [Member] | C000103073        
Average Annual Return [Line Items]        
Average Annual Return, Percent 45.68%   11.34% 12.05%
Without Sales Load [Member] | C000254224        
Average Annual Return [Line Items]        
Average Annual Return, Percent 17.71% 14.10%    
S&P 500 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 22.32%   13.41% 15.51%
Russell 3000 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 22.82%   12.31% 15.06%
Russell 3000 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 22.82%   12.31% 15.06%
Russell 3000 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 22.82%   12.31% 15.06%
Russell 3000 Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 22.82%   12.31% 15.06%
MSCI All Country World Investable Market Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 24.22% 19.16%    
Russell Microcap Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 58.55%   7.07% 12.47%
Russell Microcap Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 58.55%   7.07% 12.47%
Russell 2000 Value Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 43.01%   8.23% 10.89%
Russell 2000 Value Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 43.01%   8.23% 10.89%
FTSE 3-Month Teasury Bill Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 4.05% 4.29%