Shareholder Report, Holdings (Details)
|
Dec. 31, 2025 |
| C000012182 | NVIDIA Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.25%
|
| C000012182 | Microsoft Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.64%
|
| C000012182 | Apple, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.18%
|
| C000012182 | Alphabet, Inc.Class A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.99%
|
| C000012182 | Palantir Technologies, Inc.Class A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.97%
|
| C000012182 | Lumentum Holdings, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| C000012182 | Amazon.com, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.86%
|
| C000012182 | Synchrony Financial |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.54%
|
| C000012182 | Broadcom, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.51%
|
| C000012182 | Booking Holdings, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| C000012182 | Other Investments in Securities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.72%
|
| C000012182 | Consumer Staples |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.43%
|
| C000012182 | Utilities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.55%
|
| C000012182 | Energy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.81%
|
| C000012182 | Communication Services |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.85%
|
| C000012182 | Industrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.49%
|
| C000012182 | Consumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.07%
|
| C000012182 | Health Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.01%
|
| C000012182 | Financials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.95%
|
| C000012182 | Information Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
34.12%
|
| C000012182 | Common Stocks |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.81%
|
| C000012182 | Money Market Fund |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.18%
|
| C000012186 | Eventbrite, Inc.Class A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.38%
|
| C000012186 | ON24, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.05%
|
| C000012186 | Zumiez, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.01%
|
| C000012186 | Ranger Energy Services, Inc.Class A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.95%
|
| C000012186 | Douglas Elliman, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.75%
|
| C000012186 | Movado Group, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.72%
|
| C000012186 | CS Disco, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.66%
|
| C000012186 | Sagimet Biosciences, Inc.Class A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000012186 | Civeo Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.53%
|
| C000012186 | Rimini Street, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.52%
|
| C000012186 | Other Investments in Securities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.57%
|
| C000012186 | Consumer Staples |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.56%
|
| C000012186 | Energy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.91%
|
| C000012186 | Communication Services |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.25%
|
| C000012186 | Industrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.05%
|
| C000012186 | Consumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.45%
|
| C000012186 | Health Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.77%
|
| C000012186 | Financials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.57%
|
| C000012186 | Information Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.61%
|
| C000012186 | Materials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.26%
|
| C000012186 | Common Stocks |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.60%
|
| C000012186 | Money Market Fund |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.46%
|
| C000012186 | Preferred Stock |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.00%
|
| C000012186 | Rights |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.00%
|
| C000012186 | Investments Purchased With Cash Proceeds From Securities Lending |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.34%
|
| C000012187 | Terns Pharmaceuticals, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.99%
|
| C000012187 | Frequency Electronics, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.91%
|
| C000012187 | Kodiak Sciences, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.89%
|
| C000012187 | Olema Pharmaceuticals, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| C000012187 | Omeros Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.72%
|
| C000012187 | Envela Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.71%
|
| C000012187 | Alto Neuroscience, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| C000012187 | AXT, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.68%
|
| C000012187 | Freyr Battery, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.66%
|
| C000012187 | Idaho Strategic Resources, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.63%
|
| C000012187 | Other Investments in Securities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.63%
|
| C000012187 | Energy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.64%
|
| C000012187 | Communication Services |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.01%
|
| C000012187 | Industrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.56%
|
| C000012187 | Consumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.89%
|
| C000012187 | Health Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
33.50%
|
| C000012187 | Financials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.44%
|
| C000012187 | Information Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.63%
|
| C000012187 | Materials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.07%
|
| C000012187 | Real Estate |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.63%
|
| C000012187 | Common Stocks |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.71%
|
| C000012187 | Money Market Fund |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.29%
|
| C000012187 | Rights |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.00%
|
| C000012187 | Investments Purchased With Cash Proceeds From Securities Lending |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.44%
|
| C000012190 | Commercial Metals Co. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.32%
|
| C000012190 | Axos Financial, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.23%
|
| C000012190 | Garrett Motion, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| C000012190 | Hancock Whitney Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.19%
|
| C000012190 | WSFS Financial Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.16%
|
| C000012190 | Bread Financial Holdings, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.09%
|
| C000012190 | Magnolia Oil & Gas Corp.Class A |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.06%
|
| C000012190 | SkyWest, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.05%
|
| C000012190 | Deluxe Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.04%
|
| C000012190 | NetScout Systems, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.02%
|
| C000012190 | Other Investments in Securities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.77%
|
| C000012190 | Utilities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| C000012190 | Energy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.17%
|
| C000012190 | Industrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.01%
|
| C000012190 | Consumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.93%
|
| C000012190 | Health Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.98%
|
| C000012190 | Financials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.65%
|
| C000012190 | Information Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.42%
|
| C000012190 | Materials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| C000012190 | Real Estate |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.47%
|
| C000012190 | Common Stocks |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.63%
|
| C000012190 | Money Market Fund |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.55%
|
| C000103073 | Victoria's Secret & Co. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| C000103073 | Sphere Entertainment Co. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000103073 | Peabody Energy Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.94%
|
| C000103073 | Viasat, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.93%
|
| C000103073 | Enova International, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.92%
|
| C000103073 | Dana, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.91%
|
| C000103073 | Tutor Perini Corp. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.87%
|
| C000103073 | Signet Jewelers, Ltd. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.77%
|
| C000103073 | SiriusPoint, Ltd. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.76%
|
| C000103073 | Phinia, Inc. |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.76%
|
| C000103073 | Other Investments in Securities |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.83%
|
| C000103073 | Consumer Staples |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.51%
|
| C000103073 | Energy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.00%
|
| C000103073 | Communication Services |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.99%
|
| C000103073 | Industrials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.28%
|
| C000103073 | Consumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.01%
|
| C000103073 | Health Care |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.38%
|
| C000103073 | Financials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
35.04%
|
| C000103073 | Information Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.57%
|
| C000103073 | Materials |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.39%
|
| C000103073 | Common Stocks |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.73%
|
| C000103073 | Money Market Fund |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000103073 | Preferred Stock |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.00%
|
| C000103073 | Rights |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.00%
|
| C000103073 | Investments Purchased With Cash Proceeds From Securities Lending |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.38%
|
| C000254224 | Other Countries |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
40.91%
|
| Percent of Net Short Exposure |
37.42%
|
| C000254224 | Consumer Staples |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
6.69%
|
| Percent of Net Short Exposure |
7.87%
|
| C000254224 | Utilities |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
4.16%
|
| Percent of Net Short Exposure |
2.98%
|
| C000254224 | Energy |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
5.28%
|
| Percent of Net Short Exposure |
2.77%
|
| C000254224 | Communication Services |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
3.93%
|
| Percent of Net Short Exposure |
5.86%
|
| C000254224 | Industrials |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
17.80%
|
| Percent of Net Short Exposure |
17.02%
|
| C000254224 | Consumer Discretionary |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
10.31%
|
| Percent of Net Short Exposure |
11.53%
|
| C000254224 | Health Care |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
6.51%
|
| Percent of Net Short Exposure |
4.46%
|
| C000254224 | Financials |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
16.73%
|
| Percent of Net Short Exposure |
15.00%
|
| C000254224 | Information Technology |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
13.11%
|
| Percent of Net Short Exposure |
12.71%
|
| C000254224 | Materials |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
13.65%
|
| Percent of Net Short Exposure |
10.46%
|
| C000254224 | Real Estate |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
2.37%
|
| Percent of Net Short Exposure |
4.12%
|
| C000254224 | Brazil |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
5.04%
|
| Percent of Net Short Exposure |
4.09%
|
| C000254224 | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
5.14%
|
| Percent of Net Short Exposure |
6.57%
|
| C000254224 | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
5.69%
|
| Percent of Net Short Exposure |
4.52%
|
| C000254224 | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
5.79%
|
| Percent of Net Short Exposure |
5.79%
|
| C000254224 | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
6.29%
|
| Percent of Net Short Exposure |
7.02%
|
| C000254224 | Canada |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
6.46%
|
| Percent of Net Short Exposure |
7.01%
|
| C000254224 | South Korea - Republic of Korea |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
6.89%
|
| Percent of Net Short Exposure |
5.66%
|
| C000254224 | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
8.03%
|
| Percent of Net Short Exposure |
8.02%
|
| C000254224 | China |
|
| Holdings [Line Items] |
|
| Percent of Net Long Exposure |
10.29%
|
| Percent of Net Short Exposure |
8.66%
|