SLW Short Duration Income ETF Fixed Income Risk [Member] Interest Rate Risk [Member] Floating Rate Risk [Member] High Yield Bond Risk [Member] Credit Risk [Member] Government-Sponsored Entities Risk [Member] Management Risk [Member] Market and Geopolitical Risk [Member] Foreign Investment Risk [Member] Emerging Market Risk [Member] Foreign Currency Risk [Member] Sovereign Debt Risk [Member] Mortgage-Backed Securities Risk [Member] Asset-Backed Securities Risk [Member] CLO Risk [Member] Extension Risk [Member] Prepayment Risk [Member] Geographic Concentration Risk [Member] Sector Risk [Member] Financial Sector Risk [Member] Issuer-Specific Risk [Member] Limited History of Operations Risk and New Adviser Risk [Member] Portfolio Turnover Risk [Member] Derivatives Risk [Member] Futures Risk [Member] Leverage Risk [Member] Swaps Risk [Member] Counterparty Risk [Member] Cybersecurity Risk [Member] Valuation Risk [Member] ETF Structure Risk [Member] Cash Transaction Risk [Member] Early Close/Trading Halt Risk [Member] Not Individually Redeemable [Member] Trading Issues [Member] Market Price Variance Risk [Member] International Closed Market Trading Risk [Member] Authorized Participant Risk [Member] SLW Short Duration Income ETF [Member] SLW Short Duration Income ETF SLW Short Duration Income ETF [Member] Authorized Participant Risk. International Closed Market Trading Risk. Market Price Variance Risk. Trading Issues. Not Individually Redeemable. Early Close/Trading Halt Risk. Cash Transaction Risk. ETF Structure Risk. Valuation Risk. Cybersecurity Risk. Counterparty Risk. Swaps Risk. Leverage Risk. Futures Risk. Derivatives Risk. Portfolio Turnover Risk. Limited History of Operations Risk and New Adviser Risk. Issuer-Specific Risk. Financial Sector Risk. Sector Risk. Extension Risk. CLO Risk. Asset-Backed Securities Risk. Mortgage-Backed Securities Risk. Sovereign Debt Risk. Foreign Currency Risk. Emerging Market Risk. Foreign Investment Risk. Market and Geopolitical Risk. Management Risk. Government-Sponsored Entities Risk. Credit Risk. High Yield Bond Risk. Floating Rate Risk. Interest Rate Risk. Fixed Income Risk.