Day Hagan Smart Sector ETF Active Trading Risk [Member] Authorized Participant Risk [Member] Basic Materials Sector Risk [Member] Cash and Cash Equivalents Risk [Member] Communications Services Sector Risk [Member] Consumer Discretionary Sector Risk [Member] Consumer Staples Sector Risk [Member] Equity Securities Risk [Member] ETF Structure Risks [Member] Not Individually Redeemable [Member] Trading Issues [Member] Market Price Variance Risk [Member] Energy Sector Risk [Member] Fund of Funds Risk [Member] Financial Sector Risk [Member] Healthcare Sector Risk [Member] Industrials Sector Risk [Member] Information Technology Sector Risk [Member] Investment Style Risk [Member] Large Capitalization Company Risk [Member] Management Risk [Member] Market Risk [Member] Model and Data Risk [Member] Real Estate Sector Risk [Member] Sector Risk [Member] Underlying Fund Risk [Member] U.S. Government Obligations Risk [Member] Utilities Sector Risk [Member] Day Hagan Smart Sector Fixed Income ETF Changing Fixed Income Market Conditions Risk [Member] Credit Risk [Member] Credit Risk (for Floating Rate Loans) [Member] Duration Risk [Member] Emerging Market Risk [Member] Extension Risk [Member] Fixed Income Securities Risk [Member] Floating Rate Loans Risk [Member] Foreign Investment Risk [Member] Income Risk [Member] Inflation Protected Securities Risk [Member] Interest Rate Risk [Member] Junk Bond Risk [Member] Mortgage-Backed Securities Risk [Member] Prepayment Risk [Member] Day Hagan Smart Sector International ETF Greater China Investment Risk [Member] Derivatives Risk [Member] Futures Risk [Member] Hedging Risk [Member] Options Market Risk [Member] Options Risk [Member] Geographic Concentration Risk [Member] Day Hagan Smart Buffer ETF ADR Risk [Member] Leverage and Volatility Risk [Member] Liquidity Risk [Member] Mid/Small Cap Stock Risk [Member] New Fund Risk [Member] Real Estate/REIT Risk [Member] Eventide High Dividend ETF ADRs Risk [Member] Dividend Yield Risk [Member] Energy Equipment and Services Industry Risk [Member] Oil, Gas and Consumable Fuels Industry Risk [Member] Ethical Investment Risk [Member] Industry Concentration Risk [Member] Issuer Specific Risk [Member] Limited History of Operations Risk [Member] Medium (Mid) Capitalization Company Risk [Member] Preferred Stock Risk [Member] REIT Risk [Member] Security Risk [Member] Technology Sector Risk [Member] Multi-Utilities Industry Risk [Member] Independent Power and Renewable Electricity Producers Industry Risk [Member] Eventide International ETF Currency Risk [Member] Eventide Large Cap Growth ETF Growth Stock Risk [Member] Real Estate Risk [Member] Small Capitalization Company Risk [Member] Eventide Large Cap Value ETF Value Investing Risk [Member] Eventide Small Cap ETF Eventide US Market ETF Strategy Shares Gold Enhanced Yield ETF Cash Transactions Risk [Member] Commodity Risk [Member] Commodity Tax Risk [Member] Counterparty Risk [Member] Over-the-Counter ("OTC") Trading Risk [Member] Total Return Swap Risk [Member] Distribution Policy Risk [Member] ETF Risk [Member] Gold Risk [Member] Industrial Metals Sector Risk [Member] Precious Metals Sector Risk [Member] Regulatory Risk [Member] Rule 144A Securities Risk [Member] Volatility Risk [Member] Wholly Owned Subsidiary Risk [Member] Strategy Shares Newfound/Resolve Robust Momentum ETF ADR Currency Risk [Member] Concentration Risk [Member] Early Close/Trading Halt Risk [Member] Emerging Markets Risk [Member] Financial Markets Regulatory Risk [Member] Index Risk [Member] Index-Related Risk [Member] Passive Investment Risk [Member] Sampling Risk [Member] Tracking Error Risk [Member] Turnover Risk [Member] Strategy Shares Nasdaq 7 HANDL(TM) Index ETF Build America Bonds Risk [Member] Swaps Risk [Member] Written Call Option Risk [Member] Leverage Risk [Member] Mbs And Cmo Risk [Member] Mlp And Mlprelated Securities Risk [Member] Mlp Tax Risk [Member] Noncorrelation Risk [Member] Net Asset Value And Market Price Risk [Member] MONOPOLY ETF Foreign Securities Risk [Member] Day Hagan Smart Sector ETF Day Hagan Smart Sector Fixed Income ETF Day Hagan Smart Sector International ETF Day Hagan Smart Buffer ETF Eventide High Dividend ETF Eventide International ETF Eventide Large Cap Growth ETF Eventide Large Cap Value ETF Eventide Small Cap ETF Eventide US Market ETF Strategy Shares Gold Enhanced Yield ETF Strategy Shares Newfound/Resolve Robust Momentum ETF Strategy Shares Nasdaq 7 HANDL(TM) Index ETF MONOPOLY ETF S&P 500 Index (reflects no deduction for fees, expenses or taxes) Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) MSCI ACWI ex USA Index (reflects no deduction for fees, expenses or taxes) Bloomberg US 3000 Equal Weight Total Return Index (reflects no deduction for fees, expenses or taxes) Bloomberg US 1000 Value Total Return Index (reflects no deduction for fees, expenses or taxes) Bloomberg US 3000 Total Return Index (reflects no deduction for fees, expenses or taxes) Bloomberg U.S. Corporate TR Index (reflects no deduction for fees, expenses or taxes) Newfound/ReSolve Robust Equity Momentum Index (reflects no deduction for fees, expenses or taxes) MSCI ACWI Gross Total Return (reflects no deduction for fees, expenses or taxes) S&P Target Risk Balanced Index (reflects no deduction for fees, expenses or taxes) Nasdaq 7HANDLTM Index (reflects no deduction for fees, expenses or taxes) Day Hagan Smart Sector ETF [Default Label] Day Hagan Smart Sector Fixed Income ETF [Default Label] Day Hagan Smart Sector International ETF [Default Label] Day Hagan Smart Buffer ETF [Default Label] Eventide High Dividend ETF [Default Label] Eventide International ETF [Default Label] Eventide Large Cap Growth ETF [Default Label] Eventide Large Cap Value ETF [Default Label] Eventide Small Cap ETF [Default Label] Eventide US Market ETF [Default Label] Strategy Shares Gold Enhanced Yield ETF [Default Label] Strategy Shares Newfound/Resolve Robust Momentum ETF [Default Label] Strategy Shares Nasdaq 7 HANDL(TM) Index ETF [Default Label] MONOPOLY ETF [Default Label]