v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
C000002889 | Merck & Co. Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000002889 | Amazon.com Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000002889 | Alphabet Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002889 | Citigroup Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002889 | The PNC Financial Services Group Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002889 | Mondelez International Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000002889 | Belden Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000002889 | American International Group Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000002889 | The Cigna Group  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000002889 | PPL Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000002889 | InvestmentType_Common Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 96.30%
C000002889 | InvestmentType_U.S. Government Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000002889 | Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000002889 | Health Care  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000002889 | Diversified Industrial  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000002889 | Energy  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000002889 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000002889 | Business Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000002889 | Food and Beverage  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000002889 | Computer Software and Services  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000002889 | Other Industry sectors  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
C000002891 | Merck & Co. Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000002891 | Amazon.com Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000002891 | Alphabet Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002891 | Citigroup Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002891 | The PNC Financial Services Group Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002891 | Mondelez International Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000002891 | Belden Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000002891 | American International Group Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000002891 | The Cigna Group  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000002891 | PPL Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000002891 | InvestmentType_Common Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 96.30%
C000002891 | InvestmentType_U.S. Government Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000002891 | Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000002891 | Health Care  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000002891 | Diversified Industrial  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000002891 | Energy  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000002891 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000002891 | Business Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000002891 | Food and Beverage  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000002891 | Computer Software and Services  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000002891 | Other Industry sectors  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
C000002887 | Merck & Co. Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000002887 | Amazon.com Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000002887 | Alphabet Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002887 | Citigroup Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002887 | The PNC Financial Services Group Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002887 | Mondelez International Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000002887 | Belden Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000002887 | American International Group Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000002887 | The Cigna Group  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000002887 | PPL Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000002887 | InvestmentType_Common Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 96.30%
C000002887 | InvestmentType_U.S. Government Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000002887 | Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000002887 | Health Care  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000002887 | Diversified Industrial  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000002887 | Energy  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000002887 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000002887 | Business Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000002887 | Food and Beverage  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000002887 | Computer Software and Services  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000002887 | Other Industry sectors  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
C000002888 | Merck & Co. Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000002888 | Amazon.com Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000002888 | Alphabet Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002888 | Citigroup Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002888 | The PNC Financial Services Group Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000002888 | Mondelez International Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000002888 | Belden Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000002888 | American International Group Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000002888 | The Cigna Group  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000002888 | PPL Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000002888 | InvestmentType_Common Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 96.30%
C000002888 | InvestmentType_U.S. Government Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000002888 | Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000002888 | Health Care  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000002888 | Diversified Industrial  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000002888 | Energy  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000002888 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000002888 | Business Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000002888 | Food and Beverage  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000002888 | Computer Software and Services  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000002888 | Other Industry sectors  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%