ABR Dynamic Blend Equity & Volatility Fund Institutional Shares Investor Shares Volatility Risk Futures Contracts Risk Market Events Risk Cash and Cash Equivalents Risk Derivative Instruments Risk Leverage Risk Equity Risk Indexed Securities and Derivatives Risk Large Capitalization Company Risk Passive Management Risk U.S. Treasury Exposure Risk Counterparty Risk Exchange-Traded Products Risk Tracking Error Risk S&P 500® Index (reflects no deduction for fees, expenses or taxes) ABR 50/50 Volatility Fund Institutional Shares Investor Shares Short Sales Risk High Portfolio Turnover Risk Active Management Risk S&P 500® Index (reflects no deduction for fees, expenses or taxes) FTSE 3-Month U.S. T-Bill Index (reflects no deduction for fees, expenses or taxes) ABR 75/25 VOLATILITY FUND Institutional Shares Investor Shares S&P 500® Index (reflects no deduction for fees, expenses or taxes) FTSE 3-Month U.S. T-Bill Index (reflects no deduction for fees, expenses or taxes) C000193875Member C000193876Member S&P 500® Index (reflects no deduction for fees, expenses or taxes) [Default Label] C000220967Member C000220968Member Index4Member FTSE 3-Month U.S. T-Bill Index (reflects no deduction for fees, expenses or taxes) [Default Label]