Visa Inc Cl A [Member] Meta Platforms Inc Cl A [Member] Taiwan Semiconductor Manufacturing Co Ltd [Member] Alphabet Inc Cl C [Member] Investment Companies [Member] Net Other Assets and Liabilities [Member] Eaton Corp PLC [Member] ASML Holding NV [Member] Amazon com Inc [Member] Microsoft Corp [Member] Apple Inc [Member] NVIDIA Corp [Member] C000005036 [Member] Service Shares C000005030 [Member] Initial Shares Healthcare Sector [Member] Financial Services Sector [Member] Energy Sector [Member] Real Estate Sector [Member] C000005060 [Member] C000005061 [Member] iShares Russell 2000 Value ETF [Member] iShares Russell 2000 ETF [Member] Alignment Healthcare Inc [Member] Gates Industrial Corp PLC [Member] United Community Banks Inc [Member] PROG Holdings Inc [Member] Bel Fuse Inc Cl B [Member] Simmons First National Corp Cl A [Member] Cellebrite DI Ltd [Member] Columbia Banking System Inc [Member] Texas Instruments Inc [Member] Fifth Third Bancorp [Member] Berkshire Hathaway Inc CL B [Member] UnitedHealth Group Inc [Member] JPMorgan Chase And Co [Member] C000005065 [Member] C000005064 [Member] US Treasury Notes Securities [Member] US Treasury Bill Securities [Member] Repurchase Agreements [Member] US Government Corporations and Agencies Securities [Member] C000005072 [Member] Single Share U S Treasury Floating Rate Notes [Member] Investment Type [Axis] Net Assets Investment Company Portfolio Turnover No Trading Symbol Flag