Shareholder Report, Holdings (Details)
|
Apr. 30, 2026 |
| C000027719 | NVIDIA Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| C000027719 | Apple, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.00%
|
| C000027719 | Microsoft Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.40%
|
| C000027719 | Alphabet, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.00%
|
| C000027719 | Broadcom, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| C000027719 | Amazon.com, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.10%
|
| C000027719 | Meta Platforms, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| C000027719 | Tesla, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| C000027719 | Eli Lilly & Co. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000027719 | Visa, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000027719 | Sector Other Line |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000027719 | SectorEnergy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000027719 | SectorExchange Traded Fund |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000027719 | SectorConsumer Staples |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| C000027719 | SectorIndustrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.60%
|
| C000027719 | SectorFinancials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.50%
|
| C000027719 | SectorHealth Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.50%
|
| C000027719 | SectorCommunication Services |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| C000027719 | SectorConsumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.30%
|
| C000027719 | SectorInformation Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
50.00%
|
| C000027721 | Alphabet, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| C000027721 | Texas Instruments, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| C000027721 | JPMorgan Chase & Co. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| C000027721 | Eaton Corp. PLC |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| C000027721 | Morgan Stanley |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| C000027721 | Cisco Systems, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| C000027721 | Berkshire Hathaway, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| C000027721 | Blackrock, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| C000027721 | Bank of America Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| C000027721 | Prologis, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000027721 | Sector Other Line |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| C000027721 | SectorEnergy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.30%
|
| C000027721 | SectorConsumer Staples |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| C000027721 | SectorIndustrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.10%
|
| C000027721 | SectorFinancials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.60%
|
| C000027721 | SectorHealth Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.60%
|
| C000027721 | SectorCommunication Services |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.10%
|
| C000027721 | SectorConsumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.70%
|
| C000027721 | SectorInformation Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.80%
|
| C000027721 | SectorUtilities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.40%
|
| C000027723 | Vertiv Holdings Co. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| C000027723 | Howmet Aerospace, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| C000027723 | iShares Russell Mid-Cap Growth ETF |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| C000027723 | Quanta Services, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| C000027723 | Monolithic Power Systems, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| C000027723 | Hilton Worldwide Holdings, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| C000027723 | Royal Caribbean Cruises Ltd. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| C000027723 | Comfort Systems USA, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000027723 | Cloudflare, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| C000027723 | Vistra Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| C000027723 | Sector Other Line |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| C000027723 | SectorEnergy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| C000027723 | SectorExchange Traded Fund |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| C000027723 | SectorIndustrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
26.00%
|
| C000027723 | SectorFinancials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.70%
|
| C000027723 | SectorHealth Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| C000027723 | SectorCommunication Services |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| C000027723 | SectorConsumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.10%
|
| C000027723 | SectorInformation Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.80%
|
| C000027723 | SectorUtilities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| C000246257 | Eaton Corp. PLC |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000246257 | Monolithic Power Systems, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| C000246257 | iShares Russell Mid-Cap Value ETF |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| C000246257 | State Street Institutional US Government Money Market Fund |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| C000246257 | Microchip Technology, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| C000246257 | TD SYNNEX Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000246257 | Skyworks Solutions, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| C000246257 | Cummins, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| C000246257 | State Street Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| C000246257 | Littelfuse, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000246257 | Sector Other Line |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.70%
|
| C000246257 | SectorEnergy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.70%
|
| C000246257 | SectorIndustrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.20%
|
| C000246257 | SectorFinancials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.00%
|
| C000246257 | SectorHealth Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| C000246257 | SectorConsumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| C000246257 | SectorInformation Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.70%
|
| C000246257 | SectorUtilities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.80%
|
| C000246257 | SectorMaterials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| C000246257 | SectorReal Estate |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.60%
|
| C000027729 | U.S. Govt. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
39.10%
|
| C000027729 | Non-Rated |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000027729 | AAA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.20%
|
| C000027729 | AA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.50%
|
| C000027729 | A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| C000027729 | BBB |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.10%
|
| C000027729 | CCC |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000027729 | AssetU.S. Government Agency Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000027729 | AssetInvestment Company |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000027729 | AssetMunicipal Bond Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.10%
|
| C000027729 | AssetAsset-Backed Securities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.80%
|
| C000027729 | AssetU.S. Treasury Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
18.70%
|
| C000027729 | AssetMortgage-Backed Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
27.90%
|
| C000027729 | AssetCorporate Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
35.80%
|
| C000027731 | U.S. Govt. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
82.90%
|
| C000027731 | Non-Rated |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000027731 | AAA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.90%
|
| C000027731 | AA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| C000027731 | BB |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.60%
|
| C000027731 | AssetU.S. Government Agency Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| C000027731 | AssetInvestment Company |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| C000027731 | AssetAsset-Backed Securities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000027731 | AssetU.S. Treasury Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
46.20%
|
| C000027731 | AssetMortgage-Backed Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
42.70%
|
| C000027733 | Non-Rated |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.50%
|
| C000027733 | AAA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| C000027733 | AA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
61.70%
|
| C000027733 | A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.80%
|
| C000027733 | BBB |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| C000027733 | SectorOther |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.20%
|
| C000027733 | SectorIndustrial Development Revenue/pollution Control Revenue |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| C000027733 | SectorStudent |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| C000027733 | SectorHigher Education |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.60%
|
| C000027733 | SectorSingle Family Housing |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| C000027733 | SectorLease |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.10%
|
| C000027733 | SectorTransportation |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.60%
|
| C000027733 | SectorHospital |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.30%
|
| C000027733 | SectorLimited Tax |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.00%
|
| C000027733 | SectorGeneral Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.20%
|
| C000027715 | Non-Rated |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| C000027715 | AAA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000027715 | AA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
55.80%
|
| C000027715 | A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
36.60%
|
| C000027715 | BBB |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| C000027715 | SectorOther |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| C000027715 | SectorHigher Education |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| C000027715 | SectorSingle Family Housing |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| C000027715 | SectorLease |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
34.90%
|
| C000027715 | SectorTransportation |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| C000027715 | SectorHospital |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.80%
|
| C000027715 | SectorLimited Tax |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.10%
|
| C000027715 | SectorGeneral Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.90%
|
| C000027715 | SectorInvestment Company |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| C000027715 | SectorPower |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| C000027717 | Non-Rated |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.40%
|
| C000027717 | AAA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.40%
|
| C000027717 | AA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
70.00%
|
| C000027717 | A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| C000027717 | BBB |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| C000027717 | SectorHigher Education |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| C000027717 | SectorLease |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.70%
|
| C000027717 | SectorTransportation |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000027717 | SectorHospital |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.80%
|
| C000027717 | SectorLimited Tax |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.90%
|
| C000027717 | SectorGeneral Obligations |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
53.80%
|
| C000027717 | SectorInvestment Company |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| C000027717 | SectorPower |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000027717 | SectorMulti Family Housing |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000027717 | SectorWater/sewer |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|