v3.26.1
Shareholder Report, Average Annual Return (Details)
 6 Months Ended 12 Months Ended 19 Months Ended 28 Months Ended 34 Months Ended 36 Months Ended 60 Months Ended 71 Months Ended 86 Months Ended 93 Months Ended 120 Months Ended
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C000255834                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Institutional                    
C000229356                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Institutional                    
C000183970                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Institutional                    
C000218348                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Institutional                    
C000247047                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name ETF                    
C000247050                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name ETF                    
C000243085                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name ETF                    
C000229357                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name ETF                    
C000015260                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Institutional                    
C000015261                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Institutional                    
C000244515                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name ETF                    
Without Sales Load [Member] | C000255834                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   6.63% 4.48%                
Without Sales Load [Member] | C000229356                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   3.77%         1.95%     3.25%  
Without Sales Load [Member] | C000183970                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   6.34%         5.01%     5.17%  
Without Sales Load [Member] | C000218348                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   24.05%         7.97% 13.99%      
Without Sales Load [Member] | C000247047                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   (0.56%)   11.76%              
Without Sales Load [Member] | C000247050                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   (10.90%)   (5.40%)              
Without Sales Load [Member] | C000243085                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   20.45%       14.19%          
Without Sales Load [Member] | C000229357                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   25.54%         8.38%   9.15%    
Without Sales Load [Member] | C000015260                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   1.99%         (0.82%)       7.49%
Without Sales Load [Member] | C000015261                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   16.33%         5.71%       7.41%
Without Sales Load [Member] | C000244515                      
Average Annual Return [Line Items]                      
Average Annual Return, Percent   (8.64%)     3.23%            
Litman Gregory Index: Bloomberg 1-15 Year Municipal Bond Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Bloomberg 1-15 Year Municipal Bond Index                    
Average Annual Return, Percent   5.49% 3.77%                
Litman Gregory Index: Bloomberg US Aggregate Bond Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Bloomberg US Aggregate Bond Index                    
Average Annual Return, Percent   3.79%         0.08%     2.09%  
Litman Gregory Index: Bloomberg US Aggregate Bond Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Bloomberg US Aggregate Bond Index                    
Average Annual Return, Percent   3.79%         0.08%     2.09%  
Litman Gregory Index: MSCI China All Shares Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name MSCI China All Shares Index                    
Average Annual Return, Percent   9.54%   16.37%              
Litman Gregory Index: MSCI ACWI Ex USA Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name MSCI ACWI Ex USA Index                    
Average Annual Return, Percent   27.66%   20.25%              
Litman Gregory Index: Russell 1000 Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Russell 1000 Index                    
Average Annual Return, Percent   22.01%       20.92%          
Litman Gregory Index: Bloomberg US Aggregate Bond Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Bloomberg US Aggregate Bond Index                    
Average Annual Return, Percent   3.79%         0.08%   1.58%    
Litman Gregory Index: MSCI World Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name MSCI World Index                    
Average Annual Return, Percent   21.34%         11.47%       13.14%
Litman Gregory Index: MSCI EAFE Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name MSCI EAFE Index                    
Average Annual Return, Percent   20.23%         9.05%       9.66%
Litman Gregory Index: MSCI All Country World Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name MSCI All Country World Index                    
Average Annual Return, Percent   23.67%     20.74%            
Litman Gregory Index: Morningstar Muni National Intermediate Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar Muni National Intermediate Category                    
Average Annual Return, Percent   6.16% 3.67%                
Litman Gregory Index: Bloomberg US Interm Credit Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Bloomberg US Interm Credit Index                    
Average Annual Return, Percent   4.03%         1.80%     3.29%  
Litman Gregory Index: Morningstar Corporate Bond Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar Corporate Bond Category                    
Average Annual Return, Percent   4.21%         0.52%     2.95%  
Litman Gregory Index: Bloomberg US Aggregate 1-3 Year Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Bloomberg US Aggregate 1-3 Year Index                    
Average Annual Return, Percent   3.23%         2.15%     2.45%  
Litman Gregory Index: Morningstar Nontraditional Bond Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar Nontraditional Bond Category                    
Average Annual Return, Percent   3.53%         2.40%     2.84%  
Litman Gregory Index: Russell 2000 Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Russell 2000 Index                    
Average Annual Return, Percent   40.78%         6.98% 14.35%      
Litman Gregory Index: Morningstar US Small Blend Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar US Small Blend Category                    
Average Annual Return, Percent   33.35%         7.71% 14.61%      
Litman Gregory Index: Morningstar China Region Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar China Region Category                    
Average Annual Return, Percent   22.82%   20.54%              
Litman Gregory Index: Morningstar Foreign Large Growth Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar Foreign Large Growth Category                    
Average Annual Return, Percent   12.96%   11.90%              
Litman Gregory Index: Morningstar Large Value Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar US Large Value Category                    
Average Annual Return, Percent   21.13%       16.32%          
Litman Gregory Index: Russell 1000 Value Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Russell 1000 Value Index                    
Average Annual Return, Percent   27.09%       18.09%          
Litman Gregory Index: Morningstar Systematic Trend Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar Systematic Trend Category                    
Average Annual Return, Percent   18.44%         4.14%   4.36%    
Litman Gregory Index: SG CTA Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name SG CTA Index                    
Average Annual Return, Percent   18.35%         5.29%   5.45%    
Litman Gregory Index: Morningstar Global Large-Stock Blend Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar Global Large-Stock Blend Category                    
Average Annual Return, Percent   18.13%         8.34%       10.62%
Litman Gregory Index: MSCI All Country World Index                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name MSCI All Country World Index                    
Average Annual Return, Percent   23.67%         10.98%       12.78%
Litman Gregory Index: Morningstar Foreign Large Blend Category                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar Foreign Large Blend Category                    
Average Annual Return, Percent   21.13%         8.25%       9.07%
Litman Gregory Index: Morningstar Global Large-Stock Growth                      
Average Annual Return [Line Items]                      
Line Graph and Table Measure Name Morningstar Global Large-Stock Growth                    
Average Annual Return, Percent   13.13%     16.16%