UVA Unconstrained Medium-Term Fixed Income ETF Call/Prepayment Risk [Member] Interest Rate Risk [Member] Fixed Income Risk [Member] Authorized Participant Risk [Member] ETF Structure Risks [Member] Not Individually Redeemable [Member] Trading Issues [Member] Cash Purchases and Redemptions [Member] Market Price Variance Risk [Member] Management Risk [Member] Preferred Securities Risk [Member] Credit/Default Risk [Member] Foreign Securities Risk [Member] Sovereign Debt Risk [Member] Investment Risk [Member] Early Close/Trading Halt Risk [Member] Cybersecurity Risk [Member] Inflation-Indexed Bond Risk [Member] Mortgage- and Asset-Backed Securities Risk [Member] Collateralized Mortgage Obligations ("CMOs") [Member] U.S. Government Securities Risk [Member] Market Risk [Member] UVA Unconstrained Medium-Term Fixed Income ETF [Member] Bloomberg US Aggregate Bond Total Return Index (reflects no deductions for fees and expenses) UVA Unconstrained Medium-Term Fixed Income ETF UVA Unconstrained Medium-Term Fixed Income ETF [Member] U.S. Government Securities Risk. Mortgage- and Asset-Backed Securities Risk. Inflation-Indexed Bond Risk. Cybersecurity Risk. Early Close/Trading Halt Risk. Investment Risk. Foreign Securities Risk. Credit/Default Risk. Preferred Securities Risk. Management Risk. Market Price Variance Risk. Cash Purchases and Redemptions. Trading Issues. Not Individually Redeemable. ETF Structure Risks. Authorized Participant Risk. Fixed Income Risk. Call/Prepayment Risk. Bloomberg US Aggregate Bond Total Return Index (reflects no deductions for fees and expenses) Sovereign Debt Risk. Collateralized Mortgage Obligations ("CMOs"). Market Risk.