v3.26.1
Average Annual Total Returns
 12 Months Ended 54 Months Ended 60 Months Ended 90 Months Ended 116 Months Ended 120 Months Ended 141 Months Ended
Jun. 26, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Russell 1000 Total Return (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Russell 1000 Index(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   17.37%   13.59%     14.59% 13.37%
Russell Midcap® Value Index (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Russell Midcap® Value Index(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   11.05%   9.83%     9.78% 8.61%
Russell 3000® Index (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] [1] Russell 3000® Index*(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent [1]   17.15%   13.15%   14.43%    
Russell 2000® Total Return Index (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] [1] Russell 2000® Index*(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent [1]   12.81%   6.09%   9.72%    
Russell 2000® Value Index (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Russell 2000® Value Index(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   12.59%   8.88%   8.99%    
MSCI Emerging Markets Index (Net USD) (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] MSCI Emerging Markets Index Net (USD)(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   33.57%   4.20%     8.42% 5.50%
MSCI Emerging Markets Value (Net USD) (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] MSCI Emerging Markets Value Net (USD)(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   32.74%   6.76%     7.96% 4.59%
MSCI WORLD ex USA IMI Index Net (USD)
(reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] MSCI WORLD ex USA IMI Index Net (USD)(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   32.18%   9.03% 8.33%      
MSCI WORLD ex USA Small Cap Index (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] MSCI WORLD ex USA Small Cap Index(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   34.07%   6.49% 6.78%      
MSCI WORLD ex USA Small Cap Value Index Net (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] MSCI WORLD ex USA Small Cap Value Index Net(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   38.55%   9.77% 7.58%      
MSCI EAFE Index Net (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] MSCI EAFE Index Net (USD)(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   31.22% 7.65%          
MSCI EAFE Value Index Net (reflects no deduction for fees, expenses or taxes)                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] MSCI EAFE Value Index Net (USD)(reflects no deduction for fees, expenses or taxes)              
Average Annual Return, Percent   42.25% 12.06%          
Pzena Mid Cap Value Fund Institutional Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   (0.76%)   8.59%     8.92% 7.65%
Performance Inception Date Mar. 31, 2014              
Pzena Mid Cap Value Fund Institutional Class | After Taxes on Distributions                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions              
Average Annual Return, Percent   (1.77%)   5.87%     7.26% 6.07%
Pzena Mid Cap Value Fund Institutional Class | After Taxes on Distributions and Sales                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares              
Average Annual Return, Percent   0.30%   6.61%     7.13% 6.02%
Pzena Mid Cap Value Fund Investor Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   (1.18%)   8.17%     8.54% 7.28%
Performance Inception Date Mar. 31, 2014              
Pzena Small Cap Value Fund Investor Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   (4.93%)   8.04%   6.96%    
Performance Inception Date Apr. 27, 2016              
Pzena Small Cap Value Fund Institutional Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   (4.62%)   8.36%   7.27%    
Performance Inception Date Apr. 27, 2016              
Pzena Small Cap Value Fund Institutional Class | After Taxes on Distributions                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions              
Average Annual Return, Percent   (5.13%)   7.02%   6.14%    
Pzena Small Cap Value Fund Institutional Class | After Taxes on Distributions and Sales                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares              
Average Annual Return, Percent   (2.35%)   6.49%   5.64%    
Pzena Emerging Markets Value Fund Investor Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   35.02%   11.09%     11.04% 6.45%
Performance Inception Date Mar. 31, 2014              
Pzena Emerging Markets Value Fund Institutional Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   35.45%   11.47%     11.41% 6.79%
Performance Inception Date Mar. 31, 2014              
Pzena Emerging Markets Value Fund Institutional Class | After Taxes on Distributions                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions              
Average Annual Return, Percent   33.90%   10.25%     10.65% 6.14%
Pzena Emerging Markets Value Fund Institutional Class | After Taxes on Distributions and Sales                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares              
Average Annual Return, Percent   21.98%   8.85%     9.35% 5.41%
Pzena International Small Cap Value Fund Institutional Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   29.43%   14.21% 8.15%      
Performance Inception Date Jul. 02, 2018              
Pzena International Small Cap Value Fund Institutional Class | After Taxes on Distributions                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions              
Average Annual Return, Percent   28.80%   13.14% 7.32%      
Pzena International Small Cap Value Fund Institutional Class | After Taxes on Distributions and Sales                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares              
Average Annual Return, Percent   18.26%   11.35% 6.45%      
Pzena International Small Cap Value Fund Investor Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   29.01%   13.87% 7.85%      
Performance Inception Date Jul. 02, 2018              
Pzena International Value Class Instutitional Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   37.73% 10.15%          
Performance Inception Date Jun. 28, 2021              
Pzena International Value Class Instutitional Class | After Taxes on Distributions                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions              
Average Annual Return, Percent   36.28% 9.49%          
Pzena International Value Class Instutitional Class | After Taxes on Distributions and Sales                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares              
Average Annual Return, Percent   24.02% 8.13%          
Pzena International Value Fund Investor Class                
Prospectus [Line Items]                
Average Annual Return, Label [Optional Text] Return Before Taxes              
Average Annual Return, Percent   37.23% 9.86%          
Performance Inception Date Jun. 28, 2021              
[1] In connection with the Securities and Exchange Commission’s Tailored Shareholder Reports rule, the Fund’s primary benchmark index changed from the Russell 2000® Index to the Russell 3000® Index.