Net Assets Investment Company, Portfolio Turnover C000002050 [Member] Clearwater Core Equity Fund C000002051 [Member] Clearwater Select Equity Fund C000002052 [Member] Clearwater Tax-Exempt Bond Fund C000073549 [Member] Clearwater International Fund UBS Group A.G. (Registered) [Member] Rolls-Royce Holdings PLC [Member] Safran S.A. [Member] Samsung Electronics Co. Ltd. [Member] Seagate Technology Holdings PLC [Member] Siemens Energy A.G. [Member] Taiwan Semiconductor Manufacturing Co. Ltd. [Member] Novartis A.G. (Registered) [Member] Glenveagh Properties PLC [Member] Arch Capital Group Ltd. [Member] Investment Type [Axis] Energy Sector [Member] Financial Services Sector [Member] Healthcare Sector [Member] Other Short Term Investments [Member] Other (Short-Term Investments) [Member] Real Estate Sector [Member] ALABAMA CALIFORNIA FLORIDA ILLINOIS MICHIGAN NEW YORK OHIO PENNSYLVANIA TEXAS UTAH Other (including Closed End Funds and Short-Term Investments) [Member] MICHIGAN ST HSG DEV AUTH SF MTGE REVENUE [Member] MICHIGAN ST HSG DEV AUTH SF MTGE REVENUE [Member] MICHIGAN ST HSG DEV AUTH SF MTGE REVENUE ONE [Member] MICHIGAN ST HSG DEV AUTH SF MTGE REVENUE [Member] UTAH ST HSG CORP [Member] UTAH ST HSG CORP [Member] TEXAS ST DEPT OF HSG AND CMNTY AFFAIRS RESDL MTG REVENUE [Member] TEXAS ST DEPT OF HSG & CMNTY AFFAIRS RESDL MTG REVENUE [Member] TEXAS ST DEPT OF HSG And CMNTY AFFAIRS RESDL MTG REVENUE ONE [Member] TEXAS ST DEPT OF HSG & CMNTY AFFAIRS RESDL MTG REVENUE [Member] TEXAS ST DEPT OF HSG AND CMNTY AFFAIRS RESDL MTG REVENUE TWO [Member] TEXAS ST DEPT OF HSG & CMNTY AFFAIRS RESDL MTG REVENUE [Member] GEORGIA ST HSG AND FIN AUTH REVENUE [Member] GEORGIA ST HSG & FIN AUTH REVENUE [Member] MISSISSIPPI ST HOME CORP SF MTGE REVENUE [Member] MISSISSIPPI ST HOME CORP SF MTGE REVENUE [Member] NEW JERSEY ST HSG AND MTGE FIN AGY REVENUE ONE [Member] NEW JERSEY ST HSG & MTGE FIN AGY REVENUE [Member] NEW JERSEY ST HSG AND MTGE FIN AGY REVENUE [Member] NEW JERSEY ST HSG & MTGE FIN AGY REVENUE [Member] Ligand Pharmaceuticals, Inc. [Member] Valvoline, Inc. [Member] White Mountains Insurance Group Ltd. [Member] Ryman Hospitality Properties, Inc. [Member] Bloom Energy Corp., Class A [Member] Gildan Activewear, Inc. [Member] Charles River Laboratories International, Inc. [Member] Columbia Banking System, Inc. [Member] Commerce Bancshares, Inc. [Member] Essent Group Ltd. [Member] Meta Platforms, Inc., Class A [Member] NVIDIA Corp. [Member] Tesla, Inc. [Member] Alphabet, Inc., Class A [Member] Alphabet, Inc., Class C [Member] Amazon.com, Inc. [Member] Apple, Inc. [Member] Broadcom, Inc. [Member] Micron Technology, Inc. [Member] Microsoft Corp. [Member]