Shareholder Report, Holdings (Details)	Mar. 31, 2025
International Portfolio I - Class A \| ING Group N.V. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.16%
International Portfolio I - Class A \| Barclays PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
International Portfolio I - Class A \| Sony Group Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
International Portfolio I - Class A \| KBC Group N.V. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
International Portfolio I - Class A \| Roche Holding AG [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
International Portfolio I - Class A \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.50%
International Portfolio I - Class A \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	17.40%
International Portfolio I - Class A \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.40%
International Portfolio I - Class A \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
International Portfolio I - Class A \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Large Cap Core Portfolio I - Class A \| Apple, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.00%
Large Cap Core Portfolio I - Class A \| Microsoft Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.70%
Large Cap Core Portfolio I - Class A \| NVIDIA Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.10%
Large Cap Core Portfolio I - Class A \| Amazon.com, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Large Cap Core Portfolio I - Class A \| Alphabet, Inc. Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Large Cap Core Portfolio I - Class A \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.80%
Large Cap Core Portfolio I - Class A \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.50%
Large Cap Core Portfolio I - Class A \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	25.20%
Large Cap Core Portfolio I - Class A \| Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.10%
Large Cap Core Portfolio I - Class A \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Large Cap Core Portfolio I - Class L \| Apple, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.00%
Large Cap Core Portfolio I - Class L \| Microsoft Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.70%
Large Cap Core Portfolio I - Class L \| NVIDIA Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.10%
Large Cap Core Portfolio I - Class L \| Amazon.com, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Large Cap Core Portfolio I - Class L \| Alphabet, Inc. Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Large Cap Core Portfolio I - Class L \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.80%
Large Cap Core Portfolio I - Class L \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.50%
Large Cap Core Portfolio I - Class L \| Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.10%
Large Cap Core Portfolio I - Class L \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Large Cap Growth Portfolio I - Class A \| Apple, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Large Cap Growth Portfolio I - Class A \| Microsoft Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.98%
Large Cap Growth Portfolio I - Class A \| NVIDIA Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Large Cap Growth Portfolio I - Class A \| Amazon.com, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Large Cap Growth Portfolio I - Class A \| Meta Platforms, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.50%
Large Cap Growth Portfolio I - Class A \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Large Cap Growth Portfolio I - Class A \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
Large Cap Growth Portfolio I - Class A \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	36.30%
Large Cap Growth Portfolio I - Class A \| Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.90%
Large Cap Growth Portfolio I - Class A \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Large Cap Growth Portfolio I - Class L \| Apple, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Large Cap Growth Portfolio I - Class L \| Microsoft Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.98%
Large Cap Growth Portfolio I - Class L \| NVIDIA Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Large Cap Growth Portfolio I - Class L \| Amazon.com, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Large Cap Growth Portfolio I - Class L \| Meta Platforms, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.50%
Large Cap Growth Portfolio I - Class L \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Large Cap Growth Portfolio I - Class L \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
Large Cap Growth Portfolio I - Class L \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	36.30%
Large Cap Growth Portfolio I - Class L \| Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.90%
Large Cap Growth Portfolio I - Class L \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Large Cap Value Portfolio - Class A \| Apple, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.20%
Large Cap Value Portfolio - Class A \| Phillip Morris International, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.66%
Large Cap Value Portfolio - Class A \| Berkshire Hathaway, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.50%
Large Cap Value Portfolio - Class A \| The Progressive Corporation [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.00%
Large Cap Value Portfolio - Class A \| Air Products and Chemicals, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Large Cap Value Portfolio - Class A \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.80%
Large Cap Value Portfolio - Class A \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	17.00%
Large Cap Value Portfolio - Class A \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.80%
Large Cap Value Portfolio - Class A \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.70%
Large Cap Value Portfolio - Class A \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.40%
Large Cap Value Portfolio I - Class L \| Apple, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.20%
Large Cap Value Portfolio I - Class L \| Phillip Morris International, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.66%
Large Cap Value Portfolio I - Class L \| Berkshire Hathaway, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.50%
Large Cap Value Portfolio I - Class L \| The Progressive Corporation [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.00%
Large Cap Value Portfolio I - Class L \| Air Products and Chemicals, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Large Cap Value Portfolio I - Class L \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.80%
Large Cap Value Portfolio I - Class L \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	17.00%
Large Cap Value Portfolio I - Class L \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.80%
Large Cap Value Portfolio I - Class L \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.70%
Large Cap Value Portfolio I - Class L \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.40%
Mid Cap Core Portfolio I - Class A \| Armstrong World Industries, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.84%
Mid Cap Core Portfolio I - Class A \| AerCap Holdings N.V. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Mid Cap Core Portfolio I - Class A \| Allison Transmission Holdings, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Mid Cap Core Portfolio I - Class A \| Entegris, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Mid Cap Core Portfolio I - Class A \| Fidelity National Information Services, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Mid Cap Core Portfolio I - Class A \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	28.60%
Mid Cap Core Portfolio I - Class A \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.00%
Mid Cap Core Portfolio I - Class A \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Mid Cap Core Portfolio I - Class A \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
Mid Cap Core Portfolio I - Class A \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Mid Cap Core Portfolio I - Class L \| Armstrong World Industries, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.84%
Mid Cap Core Portfolio I - Class L \| AerCap Holdings N.V. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Mid Cap Core Portfolio I - Class L \| Allison Transmission Holdings, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Mid Cap Core Portfolio I - Class L \| Entegris, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Mid Cap Core Portfolio I - Class L \| Fidelity National Information Services, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Mid Cap Core Portfolio I - Class L \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	28.60%
Mid Cap Core Portfolio I - Class L \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.00%
Mid Cap Core Portfolio I - Class L \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Mid Cap Core Portfolio I - Class L \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
Mid Cap Core Portfolio I - Class L \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Small Cap Core Portfolio I - Class A \| AXIS Capital Holdings Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.65%
Small Cap Core Portfolio I - Class A \| Sportradar Group AG [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Small Cap Core Portfolio I - Class A \| Globus Medical, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Small Cap Core Portfolio I - Class A \| TXNM Energy, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Small Cap Core Portfolio I - Class A \| Monarch Casino & Resort, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Small Cap Core Portfolio I - Class A \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16.90%
Small Cap Core Portfolio I - Class A \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.50%
Small Cap Core Portfolio I - Class A \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.60%
Small Cap Core Portfolio I - Class A \| Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.60%
Small Cap Core Portfolio I - Class A \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%

Shareholder Report, Holdings (Details)

Mar. 31, 2025