Shareholder Report, Holdings (Details)	Jun. 30, 2026
C000012133 [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000012133 [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000012133 [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000012133 [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000012133 [Member] \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.80%
C000012133 [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000012133 [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000012133 [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000012133 [Member] \| Other Assets and Liabilities Net [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000012133 [Member] \| Tax Exempt Municipal Bonds [Member]
Holdings [Line Items]
Percent of Net Asset Value	52.80%
C000012135 [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000012135 [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000012135 [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000012135 [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
C000012135 [Member] \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	42.00%
C000012135 [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000012135 [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.60%
C000012135 [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000012135 [Member] \| Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.00%
C000012135 [Member] \| Basic Materials [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000012135 [Member] \| Telecommunications [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000012135 [Member] \| Other Assets and Liabilities Net [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000012136 [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000012136 [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000012136 [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000012136 [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
C000012136 [Member] \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	42.00%
C000012136 [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000012136 [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.60%
C000012136 [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000012136 [Member] \| Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.00%
C000012136 [Member] \| Basic Materials [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000012136 [Member] \| Telecommunications [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000012136 [Member] \| Other Assets and Liabilities Net [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000012143 [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000012143 [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	17.10%
C000012143 [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000012143 [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.70%
C000012143 [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.00%
C000012143 [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.20%
C000012143 [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000012143 [Member] \| Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000012143 [Member] \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000012143 [Member] \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.00%
C000012143 [Member] \| Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000012143 [Member] \| Other Assets and Liabilities Net [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000012142 [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000012142 [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	17.10%
C000012142 [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000012142 [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.70%
C000012142 [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.00%
C000012142 [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.20%
C000012142 [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000012142 [Member] \| Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000012142 [Member] \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000012142 [Member] \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.00%
C000012142 [Member] \| Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000012142 [Member] \| Other Assets and Liabilities Net [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.50%

Shareholder Report, Holdings (Details)

Jun. 30, 2026