Amendment Flag Amendment Flag Annual Fund Operating Expenses Table [Text Block] Annual Fund Operating Expenses [Table] Bar Chart And Performance Table Heading Bar Chart and Performance Table [Heading] Newfleet Multi-Sector Income ETF C 000117922 [Member] Newfleet Multi-Sector Income ETF Distribution And Service 12 b 1 Fees Over Assets DISTRIBUTION (12b-1) FEES Document Creation Date Document Creation Date Document [Domain] Prospectus Document Effective Date Document Effective Date Document Information Document [Axis] Document [Axis] Document Period End Date Document Period End Date Document Type Document Type Entity Central Index Key Central Index Key Entity [Domain] Series Entity Registrant Name Registrant Name Expense Example [Abstract] Expense Example: Expense Example Heading Expense Example [Heading] Expense Example Narrative [Text Block] Expense Example Narrative [Text Block] Expense Example With Redemption Table [Text Block] Expense Example, With Redemption [Table] Expense Example Year 01 Expense Example, with Redemption, 1 Year Expense Example Year 03 Expense Example, with Redemption, 3 Years Expense Exchange Traded Fund Commissions Expense Exchange Traded Fund Commissions [Text] Expense Heading Expense [Heading] Expense Narrative [Text Block] Expense Narrative [Text Block] Expenses Over Assets TOTAL ANNUAL FUND OPERATING EXPENSES Fee Waiver Or Reimbursement Over Assets FEE WAIVER AND/OR EXPENSE REIMBURSEMENT FEE WAIVER AND/OR EXPENSE REIMBURSEMENT Fee Waiver Or Reimbursement Over Assets Date Of Termination Fee Waiver or Reimbursement over Assets, Date of Termination Legal Entity [Axis] Series [Axis] Management Fees Over Assets MANAGEMENT FEES Net Expenses Over Assets TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT Objective Heading Objective [Heading] Objective Primary [Text Block] Objective, Primary [Text Block] Operating Expenses [Abstract] Operating Expenses: Operating Expenses Caption Operating Expenses Caption [Text] Other Expenses New Fund Based On Estimates Other Expenses, New Fund, Based on Estimates [Text] Other Expenses Over Assets OTHER EXPENSES Performance Availability Web Site Address Performance Availability Website Address [Text] Performance Narrative [Text Block] Performance Narrative [Text Block] Performance One Year Or Less Performance One Year or Less [Text] Performance Past Does Not Indicate Future Performance Past Does Not Indicate Future [Text] Portfolio Turnover Heading Portfolio Turnover [Heading] Portfolio Turnover [Text Block] Portfolio Turnover [Text Block] Prospectus Date ProspectusDate Prospectus Share Class [Axis] Share Class [Axis] Prospectus [Table] Prospectus: Risk Heading Risk [Heading] Risk Lose Money Risk Lose Money [Text] Risk Narrative [Text Block] Risk Narrative [Text Block] Risk Return [Abstract] Risk/Return: Risk Return Heading Risk/Return [Heading] Newfleet Multi-Sector Income ETF S 000038247 [Member] Newfleet Multi-Sector Income ETF Share Class [Domain] Share Classes Shareholder Fees Caption Shareholder Fees Caption [Text] Strategy Heading Strategy [Heading] Strategy Narrative [Text Block] Strategy Narrative [Text Block] Newfleet Multi-Sector Income ETF (Prospectus Summary) Summary S 000038247 [Member] Newfleet Multi-Sector Income ETF (Prospectus Summary) Trading Symbol Trading Symbol