GraniteShares Short Term Box ETF Market Risk [Member] Option Risk [Member] Box Spread Risk [Member] Flex Options Risk [Member] U S Government Securities Risk [Member] Active Management Risk [Member] Asset Class Risk [Member] Clearing Member Default Risk [Member] Current Market Conditions Risk [Member] Cybersecurity Risk [Member] Debt Securities Risk [Member] Derivatives Risk [Member] Early Close Late Close Trading Halt Risk [Member] Inflation Risk [Member] Interest Rate Risk [Member] High Portfolio Turnover Risk [Member] Large Shareholder Risk [Member] Liquidity Risk [Member] New Fund Risk [Member] Operational Risk [Member] Structural ETF Risks FundIs ETF [Member] Cash Transactions Risk [Member] Market Participants Risk [Member] Active Market Risk [Member] Costs of Buying and Selling Fund Shares [Member] Premium Discount Risk [Member] Trading Risks [Member] Tax Risk [Member] Valuation Risk [Member] GraniteShares Short Term Box ETF GraniteShares Short Term Box ETF GraniteShares Short Term Box ETF Valuation Risk [Member] Tax Risk [Member] Trading Risks [Member] Premium Discount Risk [Member] Costs of Buying and Selling Fund Shares [Member] Active Market Risk [Member] Market Participants Risk [Member] Cash Transactions Risk [Member] Structural ETF Risks FundIs ETF [Member] Operational Risk [Member] New Fund Risk [Member] Liquidity Risk [Member] Large Shareholder Risk [Member] High Portfolio Turnover Risk [Member] Inflation Risk [Member] Derivatives Risk [Member] Debt Securities Risk [Member] Cybersecurity Risk [Member] Current Market Conditions Risk [Member] Clearing Member Default Risk [Member] Asset Class Risk [Member] Active Management Risk [Member] Flex Options Risk [Member] Box Spread Risk [Member] Option Risk [Member] Market Risk [Member] GraniteShares Short Term Box ETF [Default Label]