v3.25.2
Shareholder Report, Holdings (Details)
Jun. 30, 2025
C000017156 | Credo Technology Group Holding Ltd.  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000017156 | Fabrinet  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000017156 | IonQ, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000017156 | Hims & Hers Health, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000017156 | HealthEquity, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017156 | The Ensign Group, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017156 | Fluor Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017156 | Blueprint Medicines Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017156 | AeroVironment, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017156 | Brinker International, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017156 | SectorFinancials  
Holdings [Line Items]  
Percent of Net Asset Value 19.00%
C000017156 | SectorIndustrials  
Holdings [Line Items]  
Percent of Net Asset Value 17.00%
C000017156 | SectorHealth Care  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
C000017156 | SectorInformation Technology  
Holdings [Line Items]  
Percent of Net Asset Value 14.00%
C000017156 | SectorConsumer Discretionary  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000017156 | SectorReal Estate  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000017156 | SectorEnergy  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000017156 | SectorMaterials  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000017156 | SectorUtilities  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000017156 | SectorCommunication Services  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000017156 | SectorConsumer Staples  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000017156 | AssetCommon Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 98.00%
C000017156 | AssetCash Equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000017156 | AssetGovernment & Agency Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017156 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017156 | AssetOther Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017156 | AssetWarrants  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017156 | Asset Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017157 | Credo Technology Group Holding Ltd.  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000017157 | Fabrinet  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000017157 | IonQ, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000017157 | Hims & Hers Health, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000017157 | HealthEquity, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017157 | The Ensign Group, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017157 | Fluor Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017157 | Blueprint Medicines Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017157 | AeroVironment, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017157 | Brinker International, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000017157 | SectorFinancials  
Holdings [Line Items]  
Percent of Net Asset Value 19.00%
C000017157 | SectorIndustrials  
Holdings [Line Items]  
Percent of Net Asset Value 17.00%
C000017157 | SectorHealth Care  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
C000017157 | SectorInformation Technology  
Holdings [Line Items]  
Percent of Net Asset Value 14.00%
C000017157 | SectorConsumer Discretionary  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000017157 | SectorReal Estate  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000017157 | SectorEnergy  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000017157 | SectorMaterials  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000017157 | SectorUtilities  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000017157 | SectorCommunication Services  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000017157 | SectorConsumer Staples  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000017157 | AssetCommon Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 98.00%
C000017157 | AssetCash Equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000017157 | AssetGovernment & Agency Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017157 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017157 | AssetOther Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017157 | AssetWarrants  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000017157 | Asset Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%