Shareholder Report, Holdings (Details)
|
Jun. 30, 2025 |
| Core Bond Series (Class I) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Core Bond Series (Class I) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Core Bond Series (Class I) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Core Bond Series (Class I) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Core Bond Series (Class I) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.20%
|
| Core Bond Series (Class I) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Core Bond Series (Class I) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Core Bond Series (Class I) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Core Bond Series (Class I) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Core Bond Series (Class I) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Core Bond Series (Class I) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Core Bond Series (Class I) | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| Core Bond Series (Class I) | U.S. Treasury Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.20%
|
| Core Bond Series (Class I) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Core Bond Series (Class I) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.60%
|
| Core Bond Series (Class S) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Core Bond Series (Class S) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Core Bond Series (Class S) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Core Bond Series (Class S) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Core Bond Series (Class S) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.20%
|
| Core Bond Series (Class S) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Core Bond Series (Class S) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Core Bond Series (Class S) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Core Bond Series (Class S) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Core Bond Series (Class S) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Core Bond Series (Class S) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Core Bond Series (Class S) | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| Core Bond Series (Class S) | U.S. Treasury Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.20%
|
| Core Bond Series (Class S) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Core Bond Series (Class S) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.60%
|
| Core Bond Series (Class W) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Core Bond Series (Class W) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Core Bond Series (Class W) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Core Bond Series (Class W) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Core Bond Series (Class W) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.20%
|
| Core Bond Series (Class W) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Core Bond Series (Class W) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Core Bond Series (Class W) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Core Bond Series (Class W) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Core Bond Series (Class W) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Core Bond Series (Class W) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Core Bond Series (Class W) | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| Core Bond Series (Class W) | U.S. Treasury Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.20%
|
| Core Bond Series (Class W) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Core Bond Series (Class W) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.60%
|
| Core Bond Series (Class Z) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Core Bond Series (Class Z) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Core Bond Series (Class Z) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Core Bond Series (Class Z) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Core Bond Series (Class Z) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.20%
|
| Core Bond Series (Class Z) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Core Bond Series (Class Z) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Core Bond Series (Class Z) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Core Bond Series (Class Z) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Core Bond Series (Class Z) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Core Bond Series (Class Z) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Core Bond Series (Class Z) | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| Core Bond Series (Class Z) | U.S. Treasury Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.20%
|
| Core Bond Series (Class Z) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Core Bond Series (Class Z) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.60%
|
| Unconstrained Bond Series (Class I) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Unconstrained Bond Series (Class I) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Unconstrained Bond Series (Class I) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Unconstrained Bond Series (Class I) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Unconstrained Bond Series (Class I) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Unconstrained Bond Series (Class I) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Unconstrained Bond Series (Class I) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Unconstrained Bond Series (Class I) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Unconstrained Bond Series (Class I) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.80%
|
| Unconstrained Bond Series (Class I) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.00%
|
| Unconstrained Bond Series (Class I) | U.S. Treasury Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Unconstrained Bond Series (Class I) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
23.90%
|
| Unconstrained Bond Series (Class I) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Unconstrained Bond Series (Class I) | Cash, short-term investment, and liabilities, less other assets [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Unconstrained Bond Series (Class I) | Loan Assignments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.60%
|
| Unconstrained Bond Series (Class S) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Unconstrained Bond Series (Class S) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Unconstrained Bond Series (Class S) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Unconstrained Bond Series (Class S) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Unconstrained Bond Series (Class S) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Unconstrained Bond Series (Class S) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Unconstrained Bond Series (Class S) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Unconstrained Bond Series (Class S) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Unconstrained Bond Series (Class S) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.80%
|
| Unconstrained Bond Series (Class S) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.00%
|
| Unconstrained Bond Series (Class S) | U.S. Treasury Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Unconstrained Bond Series (Class S) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
23.90%
|
| Unconstrained Bond Series (Class S) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Unconstrained Bond Series (Class S) | Cash, short-term investment, and liabilities, less other assets [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Unconstrained Bond Series (Class S) | Loan Assignments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.60%
|
| Unconstrained Bond Series (Class W) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Unconstrained Bond Series (Class W) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Unconstrained Bond Series (Class W) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Unconstrained Bond Series (Class W) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Unconstrained Bond Series (Class W) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Unconstrained Bond Series (Class W) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Unconstrained Bond Series (Class W) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Unconstrained Bond Series (Class W) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Unconstrained Bond Series (Class W) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.80%
|
| Unconstrained Bond Series (Class W) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.00%
|
| Unconstrained Bond Series (Class W) | U.S. Treasury Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Unconstrained Bond Series (Class W) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
23.90%
|
| Unconstrained Bond Series (Class W) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Unconstrained Bond Series (Class W) | Cash, short-term investment, and liabilities, less other assets [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Unconstrained Bond Series (Class W) | Loan Assignments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.60%
|
| High Yield Bond Series (Class I) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.50%
|
| High Yield Bond Series (Class I) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.70%
|
| High Yield Bond Series (Class I) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.30%
|
| High Yield Bond Series (Class I) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.60%
|
| High Yield Bond Series (Class I) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.40%
|
| High Yield Bond Series (Class I) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.60%
|
| High Yield Bond Series (Class I) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.20%
|
| High Yield Bond Series (Class I) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| High Yield Bond Series (Class I) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| High Yield Bond Series (Class I) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| High Yield Bond Series (Class I) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| High Yield Bond Series (Class I) | Loan Assignments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| High Yield Bond Series (Class I) | Consumer Staples [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| High Yield Bond Series (Class I) | Health Care [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.40%
|
| High Yield Bond Series (Class I) | Information Technology [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| High Yield Bond Series (Class S) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.50%
|
| High Yield Bond Series (Class S) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.70%
|
| High Yield Bond Series (Class S) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.30%
|
| High Yield Bond Series (Class S) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.60%
|
| High Yield Bond Series (Class S) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.40%
|
| High Yield Bond Series (Class S) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.60%
|
| High Yield Bond Series (Class S) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.20%
|
| High Yield Bond Series (Class S) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| High Yield Bond Series (Class S) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| High Yield Bond Series (Class S) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| High Yield Bond Series (Class S) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| High Yield Bond Series (Class S) | Loan Assignments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| High Yield Bond Series (Class S) | Consumer Staples [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| High Yield Bond Series (Class S) | Health Care [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.40%
|
| High Yield Bond Series (Class S) | Information Technology [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| High Yield Bond Series (Class W) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.50%
|
| High Yield Bond Series (Class W) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.70%
|
| High Yield Bond Series (Class W) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.30%
|
| High Yield Bond Series (Class W) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.60%
|
| High Yield Bond Series (Class W) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.40%
|
| High Yield Bond Series (Class W) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.60%
|
| High Yield Bond Series (Class W) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.20%
|
| High Yield Bond Series (Class W) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| High Yield Bond Series (Class W) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| High Yield Bond Series (Class W) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| High Yield Bond Series (Class W) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| High Yield Bond Series (Class W) | Loan Assignments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| High Yield Bond Series (Class W) | Consumer Staples [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| High Yield Bond Series (Class W) | Health Care [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.40%
|
| High Yield Bond Series (Class W) | Information Technology [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| High Yield Bond Series (Class Z) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.50%
|
| High Yield Bond Series (Class Z) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.70%
|
| High Yield Bond Series (Class Z) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.30%
|
| High Yield Bond Series (Class Z) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.60%
|
| High Yield Bond Series (Class Z) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.40%
|
| High Yield Bond Series (Class Z) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.60%
|
| High Yield Bond Series (Class Z) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.20%
|
| High Yield Bond Series (Class Z) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| High Yield Bond Series (Class Z) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| High Yield Bond Series (Class Z) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| High Yield Bond Series (Class Z) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| High Yield Bond Series (Class Z) | Loan Assignments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| High Yield Bond Series (Class Z) | Consumer Staples [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| High Yield Bond Series (Class Z) | Health Care [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.40%
|
| High Yield Bond Series (Class Z) | Information Technology [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Diversified Tax Exempt Series (Class A) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Diversified Tax Exempt Series (Class A) | Revenue Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
37.10%
|
| Diversified Tax Exempt Series (Class A) | General Obligation Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
54.40%
|
| Diversified Tax Exempt Series (Class A) | Exchange-Traded Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Diversified Tax Exempt Series (Class A) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Diversified Tax Exempt Series (Class A) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Diversified Tax Exempt Series (Class A) | NEW YORK |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.50%
|
| Diversified Tax Exempt Series (Class A) | WISCONSIN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Diversified Tax Exempt Series (Class A) | TEXAS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.00%
|
| Diversified Tax Exempt Series (Class A) | WASHINGTON |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| Diversified Tax Exempt Series (Class A) | FLORIDA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Diversified Tax Exempt Series (Class A) | PENNSYLVANIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.20%
|
| Diversified Tax Exempt Series (Class A) | TENNESSEE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Diversified Tax Exempt Series (Class A) | ILLINOIS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Diversified Tax Exempt Series (Class A) | DISTRICT OF COLUMBIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.50%
|
| Diversified Tax Exempt Series (Class A) | OHIO |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Diversified Tax Exempt Series (Class W) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Diversified Tax Exempt Series (Class W) | Revenue Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
37.10%
|
| Diversified Tax Exempt Series (Class W) | General Obligation Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
54.40%
|
| Diversified Tax Exempt Series (Class W) | Exchange-Traded Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Diversified Tax Exempt Series (Class W) | U.S. Treasury Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Diversified Tax Exempt Series (Class W) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Diversified Tax Exempt Series (Class W) | NEW YORK |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.50%
|
| Diversified Tax Exempt Series (Class W) | WISCONSIN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Diversified Tax Exempt Series (Class W) | TEXAS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.00%
|
| Diversified Tax Exempt Series (Class W) | WASHINGTON |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| Diversified Tax Exempt Series (Class W) | FLORIDA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Diversified Tax Exempt Series (Class W) | PENNSYLVANIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.20%
|
| Diversified Tax Exempt Series (Class W) | TENNESSEE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Diversified Tax Exempt Series (Class W) | ILLINOIS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Diversified Tax Exempt Series (Class W) | DISTRICT OF COLUMBIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.50%
|
| Diversified Tax Exempt Series (Class W) | OHIO |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Callodine Equity Income Series (Class I) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Callodine Equity Income Series (Class I) | Common Stocks [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.50%
|
| Callodine Equity Income Series (Class I) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Callodine Equity Income Series (Class I) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.40%
|
| Callodine Equity Income Series (Class I) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.00%
|
| Callodine Equity Income Series (Class I) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.00%
|
| Callodine Equity Income Series (Class I) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.20%
|
| Callodine Equity Income Series (Class I) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Callodine Equity Income Series (Class I) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Callodine Equity Income Series (Class I) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Callodine Equity Income Series (Class I) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Callodine Equity Income Series (Class I) | Consumer Staples [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.30%
|
| Callodine Equity Income Series (Class I) | Health Care [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Callodine Equity Income Series (Class S) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Callodine Equity Income Series (Class S) | Common Stocks [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.50%
|
| Callodine Equity Income Series (Class S) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Callodine Equity Income Series (Class S) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.40%
|
| Callodine Equity Income Series (Class S) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.00%
|
| Callodine Equity Income Series (Class S) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.00%
|
| Callodine Equity Income Series (Class S) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.20%
|
| Callodine Equity Income Series (Class S) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Callodine Equity Income Series (Class S) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Callodine Equity Income Series (Class S) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Callodine Equity Income Series (Class S) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Callodine Equity Income Series (Class S) | Consumer Staples [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.30%
|
| Callodine Equity Income Series (Class S) | Health Care [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Callodine Equity Income Series (Class Z) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Callodine Equity Income Series (Class Z) | Common Stocks [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.50%
|
| Callodine Equity Income Series (Class Z) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Callodine Equity Income Series (Class Z) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.40%
|
| Callodine Equity Income Series (Class Z) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.00%
|
| Callodine Equity Income Series (Class Z) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.00%
|
| Callodine Equity Income Series (Class Z) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.20%
|
| Callodine Equity Income Series (Class Z) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Callodine Equity Income Series (Class Z) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Callodine Equity Income Series (Class Z) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Callodine Equity Income Series (Class Z) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Callodine Equity Income Series (Class Z) | Consumer Staples [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.30%
|
| Callodine Equity Income Series (Class Z) | Health Care [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Credit Series (Class I) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Credit Series (Class I) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Credit Series (Class I) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Credit Series (Class I) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Credit Series (Class I) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.00%
|
| Credit Series (Class I) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Credit Series (Class I) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Credit Series (Class I) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Credit Series (Class I) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Credit Series (Class I) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.00%
|
| Credit Series (Class I) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.20%
|
| Credit Series (Class I) | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| Credit Series (Class I) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
28.20%
|
| Credit Series (Class S) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Credit Series (Class S) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Credit Series (Class S) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Credit Series (Class S) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Credit Series (Class S) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.00%
|
| Credit Series (Class S) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Credit Series (Class S) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Credit Series (Class S) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Credit Series (Class S) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Credit Series (Class S) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.00%
|
| Credit Series (Class S) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.20%
|
| Credit Series (Class S) | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| Credit Series (Class S) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
28.20%
|
| Credit Series (Class W) | Cash, short-term investment, and other assets, less liabilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Credit Series (Class W) | Communication Services [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Credit Series (Class W) | Consumer Discretionary [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Credit Series (Class W) | Energy [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Credit Series (Class W) | Financials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.00%
|
| Credit Series (Class W) | Industrials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Credit Series (Class W) | Materials [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Credit Series (Class W) | Real Estate [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Credit Series (Class W) | Utilities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Credit Series (Class W) | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.00%
|
| Credit Series (Class W) | Commercial Mortgage-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.20%
|
| Credit Series (Class W) | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| Credit Series (Class W) | U.S. Government Agencies [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
28.20%
|