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Angel Oak High Yield Opportunities ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading ANGEL OAK HIGH YIELD OPPORTUNITIES ETF
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The investment objective of the Angel Oak High Yield Opportunities ETF (the “Fund”) is to earn a high level of current income
Objective, Secondary [Text Block] rr_ObjectiveSecondaryTextBlock with a secondary objective of capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock The following table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund (“Shares”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example above, affect the Fund’s performance. For the most recent fiscal year, the portfolio turnover rate for the Angel Oak High Yield Opportunities Fund (the “Predecessor High Yield Fund”) was 33% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 33.00%
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Restated to reflect the unitary fee structure of the Fund.
Expense Example [Heading] rr_ExpenseExampleHeading Expense Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then continue to hold or sell all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. The example does not take into account brokerage commissions that you may pay on your purchases and sales of Shares.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
In pursuing its investment objective, the Fund will, under normal circumstances, invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in securities rated below investment grade (measured at the time of purchase). These securities may include domestic and foreign corporate debt securities, including bank-issued subordinated debt, fixed and floating rate bonds, and zero coupon bonds; and various forms of debt securitizations, including agency and non-agency residential mortgage-backed securities (“RMBS”), commercial mortgage-backed securities (“CMBS”); collateralized loan obligations (“CLOs”), collateralized debt obligations (“CDOs”), collateralized mortgage obligations (“CMOs”), asset-backed securities (“ABS”), including securities or securitizations backed by assets such as credit card receivables, student loans, automobile loans, and residential and commercial real estate, and other debt securitizations (“Structured Products”); and derivative instruments that invest substantially all of their assets in, are linked to, or otherwise provide investment exposure to, securities rated below investment grade. The Fund may purchase corporate securities issued by companies of any size – small cap, medium cap or large cap.
The Fund may invest, without limitation, in securities of any quality and maturity, including high-yield securities (also known as “junk bonds”), and securities that are not rated by any rating agencies. These high-yield securities will be rated BB+ or lower by Standard & Poor’s Rating Group (“S&P”) or will be of equivalent quality rating from another Nationally Recognized Statistical Ratings Organization. If a security is unrated, the Adviser may determine whether it is of comparable quality and therefore eligible for the Fund’s investment. The Fund intends to focus primarily on securities with credit ratings (or equivalent quality) between the
range of BB+ and B- of the high-yield market. However, the Fund may invest in or continue to hold securities that have credit ratings lower than B, are bankrupt, or are in default.
The Fund will, under normal circumstances, invest at least 20% of its net assets, plus the amount of any borrowings for investment purposes, in Structured Products.
The Fund may also invest up to 20% of its assets in investment grade securities, including U.S. Treasury and U.S. government agency securities.
The Fund may invest up to 15% of its net assets in equity securities such as common stock, preferred stock, warrants, rights and exchange-traded funds (“ETFs”) that invest in equity securities or that track an index of equity securities.
The Fund may invest, without limitation, in the securities of other investment companies, including closed-end investment companies, ETFs or business development companies (“BDCs”). The other investment companies in which the Fund invests may be part of the same group of investment companies as the Fund.
The Fund may invest up to 25% of its assets in foreign debt securities, including corporate fixed income securities registered and sold in the United States by foreign issuers (commonly known as “Yankee” bonds).
The Fund may invest up to 15% of its net assets in investments that are deemed to be illiquid, which may include private placements, certain Rule 144A securities (which are subject to resale restrictions), and securities of issuers that are bankrupt or in default.
The Fund may invest, without limitation, in securities of any maturity and duration, but, under normal circumstances, the Fund will have a dollar-weighted average maturity between two and fifteen years. The average maturity may be less than two years if the Adviser believes a temporary defensive posture is appropriate. Maturity refers to the length of time until a debt security’s principal is repaid with interest. Duration is a measure used to determine the sensitivity of a security’s price to changes in interest rates that incorporates a security’s yield, coupon, final maturity and call and put features and prepayment exposure into one measure with a higher duration indicating greater sensitivity to interest rates. For example, if a portfolio has a duration of two years, and interest rates increase (fall) by 1%, the portfolio would decline (increase) in value by approximately 2%. However, duration may not accurately reflect the true interest rate sensitivity of instruments held by the Fund and, therefore the Fund’s exposure to changes in interest rates.
In pursuing its investment objectives or for hedging purposes, the Fund may utilize borrowing and various types of derivative instruments, including swaps, futures contracts, and options, although not all such derivatives will be used at all times. Such derivatives may trade over-the-counter or on an exchange and may principally be used for one or more of the following purposes: speculation, currency hedging, duration management, credit deterioration hedging, hedges against broad market movements, or to pursue the Fund’s investment objective. The Fund may borrow to the maximum extent permitted by applicable law. The Fund may also invest in repurchase agreements and borrow through reverse repurchase agreements.
The Fund’s allocation of its assets into various asset classes within its investment strategy will depend on the views of the Adviser as to the best value relative to what is currently presented in the marketplace. Within the Structured Products allocation, the Adviser analyzes a variety of factors when selecting investments for the Fund, such as collateral quality, credit support, structure and market conditions. Within the corporate credit allocation, investment decisions are made based on fundamental research and analysis to identify issuers with the ability to improve their credit profile over time with attractive valuations, resulting in both income and potential capital appreciation. Across all allocations, the Adviser may consider maturity, yield and ratings information and opportunities for price appreciation among other criteria. The Adviser attempts to diversify risks that arise from position sizes, geography, ratings, duration, deal structure and collateral values. The Adviser seeks to limit risk of principal by targeting assets that it considers undervalued. From time to time, the Fund may allocate its assets so as to focus on particular types of securities.
As part of its investment process, the Adviser also considers certain environmental, social and governance (“ESG”) and sustainability factors that it believes could have a material negative or positive impact on the risk profiles of the issuers or underlying collateral assets of certain securities in which the Fund may invest. These determinations may not be conclusive, and securities that may be negatively impacted by such factors may be purchased and retained by the Fund while the Fund may divest or not invest in securities that may be positively impacted by such factors. The Adviser may sell investments, including Structured Products, if it determines that any of the mentioned factors have changed materially from its initial analysis or that other factors indicate that an investment is no longer earning a return commensurate with its risk or that a different security will better help the Fund achieve its investment objective.
The Fund is an actively managed ETF, which is a fund that trades like other publicly-traded securities. The Fund is not an index fund and does not seek to replicate the performance of a specified index.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund will, under normal circumstances, invest at least 20% of its net assets, plus the amount of any borrowings for investment purposes, in Structured Products.The Fund may also invest up to 20% of its assets in investment grade securities, including U.S. Treasury and U.S. government agency securities.The Fund may invest up to 15% of its net assets in equity securities such as common stock, preferred stock, warrants, rights and exchange-traded funds (“ETFs”) that invest in equity securities or that track an index of equity securities. The Fund may invest, without limitation, in the securities of other investment companies, including closed-end investment companies, ETFs or business development companies (“BDCs”). The other investment companies in which the Fund invests may be part of the same group of investment companies as the Fund. The Fund may invest up to 25% of its assets in foreign debt securities, including corporate fixed income securities registered and sold in the United States by foreign issuers (commonly known as “Yankee” bonds). The Fund may invest up to 15% of its net assets in investments that are deemed to be illiquid, which may include private placements, certain Rule 144A securities (which are subject to resale restrictions), and securities of issuers that are bankrupt or in default. The Fund may invest, without limitation, in securities of any maturity and duration, but, under normal circumstances, the Fund will have a dollar-weighted average maturity between two and fifteen years. The average maturity may be less than two years if the Adviser believes a temporary defensive posture is appropriate. Maturity refers to the length of time until a debt security’s principal is repaid with interest. Duration is a measure used to determine the sensitivity of a security’s price to changes in interest rates that incorporates a security’s yield, coupon, final maturity and call and put features and prepayment exposure into one measure with a higher duration indicating greater sensitivity to interest rates. For example, if a portfolio has a duration of two years, and interest rates increase (fall) by 1%, the portfolio would decline (increase) in value by approximately 2%. However, duration may not accurately reflect the true interest rate sensitivity of instruments held by the Fund and, therefore the Fund’s exposure to changes in interest rates.
Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following performance information indicates some of the risks of investing in the Fund. The bar chart shows the Fund’s performance for the calendar years ended December 31. The table illustrates how the average annual total returns of the Fund compare over time to those of a broad-based securities market index. Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Past performance may have been different if the Fund’s current fee structure had been in place during the periods. Updated performance information is available online at www.angeloakcapital.com or by calling (855) 751-4324 (toll free).
The Fund will be the successor to the investment performance of the Predecessor High Yield Fund as a result of the expected reorganization of the Predecessor High Yield Fund into the Fund on or about February 16, 2024. The Predecessor High Yield Fund, in turn, is the successor to the investment performance of the Rainier High Yield Fund as a result of the reorganization of the Rainier High Yield Fund into the Predecessor High Yield Fund on April 15, 2016. Accordingly, the performance information shown below for periods prior to April 15, 2016 is that of the Rainier High Yield Fund’s Institutional Shares, and the performance information following such date until February 16, 2024 is that of the Predecessor High Yield Fund’s Institutional Shares.
On December 31, 2022, changes were made to the Predecessor High Yield Fund’s investment strategies. As a result, the Predecessor High Yield Fund’s performance during periods prior to this date may have differed had the Predecessor High Yield Fund’s investment policies and strategies in effect prior to the reorganization been in place at those times. Additionally, the Predecessor High Yield Fund’s performance may have differed had it been structured as an ETF. The Fund has the same investment objectives, policies and strategies as the Predecessor High Yield Fund has had since December 31, 2022.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following performance information indicates some of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone (855) 751-4324
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.angeloakcapital.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results
Bar Chart [Heading] rr_BarChartHeading Annual Total Returns(for years ended December 31st)
Annual Return 2014 rr_AnnualReturn2014 1.44%
Annual Return 2015 rr_AnnualReturn2015 (1.17%)
Annual Return 2016 rr_AnnualReturn2016 16.31%
Annual Return 2017 rr_AnnualReturn2017 7.78%
Annual Return 2018 rr_AnnualReturn2018 (2.40%)
Annual Return 2019 rr_AnnualReturn2019 14.00%
Annual Return 2020 rr_AnnualReturn2020 5.08%
Annual Return 2021 rr_AnnualReturn2021 6.04%
Annual Return 2022 rr_AnnualReturn2022 (7.57%)
Annual Return 2023 rr_AnnualReturn2023 12.54%
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
During the periods shown in the chart, the highest quarterly return was 11.57% (for the quarter ended June 30, 2020) and the lowest quarterly return was -15.13% (for the quarter ended March 31, 2020).
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 11.57%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (15.13%)
Performance Table Heading rr_PerformanceTableHeading Angel Oak High Yield Opportunities ETF Average Annual Total Returns
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher In certain cases, the figure representing “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. In certain cases, the figure representing “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
Angel Oak High Yield Opportunities ETF | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock There may be circumstances that could prevent the Fund from achieving its investment objective and you may lose money by investing in the Fund.
Angel Oak High Yield Opportunities ETF | Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock An investment in the Fund is not a deposit at a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Angel Oak High Yield Opportunities ETF | High-Yield Securities Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock High-Yield Securities Risks. High-yield securities (also known as “junk bonds”) carry a greater degree of risk and are more volatile than investment grade securities and are considered speculative. High-yield securities may be issued by companies that are restructuring, are smaller and less creditworthy, or are more highly indebted than other companies. This means that they may have more difficulty making scheduled payments of principal and interest. Changes in the value of high-yield securities are influenced more by changes in the financial and business position of the issuing company than by changes in interest rates when compared to investment grade securities. The Fund’s investments in high-yield securities expose it to a substantial degree of credit risk.
Angel Oak High Yield Opportunities ETF | Fixed-Income Instruments Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Fixed-Income Instruments Risks. The Fund will invest in fixed-income instruments and securities. Such investments may be secured, partially secured or unsecured and may be unrated, and whether or not rated, may have speculative characteristics. The market price of the Fund’s investments will change in response to changes in interest rates and other factors. Generally, when interest rates rise, the values of fixed-income instruments fall, and vice versa. In typical interest rate environments, the prices of longer-term fixed-income instruments generally fluctuate more than the prices of shorter-term fixed-income instruments as interest rates change. In addition, a fund with a longer average portfolio duration will be more sensitive to changes in interest rates than a fund with a shorter average portfolio duration. A fund with a negative average portfolio duration may decline in value as interest rates decrease. Most high yield investments pay a fixed rate of interest and are therefore vulnerable to inflation risk (inflation rates are currently elevated relative to normal conditions). The obligor of a fixed-income instrument may not be able or willing to pay interest or to repay principal when due in accordance with the terms of the associated agreement.
Angel Oak High Yield Opportunities ETF | General Market Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock General Market Risk. The capital markets may experience periods of disruption, instability and volatility. Political, geopolitical, natural and other events, including war, terrorism, trade disputes, government shutdowns, market closures, natural and environmental disasters, epidemics, pandemics and other public health crises and related events have led, and in the future may lead, to economic uncertainty, decreased economic activity, increased market volatility and other disruptive effects on U.S. and global economies and markets. Such conditions may materially and adversely affect the markets globally and in the jurisdictions in which the Fund invests, which may have a negative impact on the Fund’s performance. The Fund’s NAV and investment return will fluctuate based upon changes in the value of its portfolio securities.
Angel Oak High Yield Opportunities ETF | Credit Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Credit Risk. Credit risk is the risk that the Fund could lose money if the issuer or guarantor of a fixed income security, or the counterparty to a derivative contract, is unable or unwilling to meet its financial obligations.
Angel Oak High Yield Opportunities ETF | Interest Rate Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Interest Rate Risk. The Fund is exposed to risks associated with changes in interest rates, including the possibility that, in a period of rising interest rates, securities may exhibit additional volatility and may lose value.
Angel Oak High Yield Opportunities ETF | Structured Products Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Structured Products Risks. The Fund may invest in Structured Products, including CLOs, CDOs, CMOs, and other asset-backed securities and debt securitizations. Some Structured Products have credit ratings, but are typically issued in various classes with various priorities. Normally, Structured Products are privately offered and sold (that is, they are not registered under the securities laws) and may be characterized by the Fund as illiquid securities; however, an active dealer market may exist for Structured Products that qualify for Rule 144A transactions. The senior and junior tranches of Structured Products may have floating or variable interest rates based on LIBOR and are subject to the risks associated with securities tied to LIBOR, including the risks associated with the pending replacement of LIBOR with an alternative reference rate. The Fund may also invest in the equity tranches of a Structured Product, which typically represent the first loss position in the Structured Product, are unrated and are subject to higher risks. Equity tranches of Structured Products typically do not have a fixed coupon and payments on equity tranches will be based on the income received from the underlying collateral and the payments made to the senior tranches, both of which may be based on floating rates based on LIBOR.
Angel Oak High Yield Opportunities ETF | Extension Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Extension Risk. An issuer could exercise its right to pay principal on an obligation held by the Fund (such as a mortgage-backed security) later than expected. This may happen when there is a rise in interest rates. Under these circumstances, the value of the obligation will decrease, and the Fund will also suffer from the inability to reinvest in higher yielding securities.
Angel Oak High Yield Opportunities ETF | Prepayment Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Prepayment Risk. When interest rates decline, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates.
Angel Oak High Yield Opportunities ETF | Mortgage-Backed And Asset-Backed Securities Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Mortgage-Backed and Asset-Backed Securities Risks. Mortgage-backed and other asset-backed securities are subject to the risks of traditional fixed-income instruments. However, they are also subject to prepayment risk and extension risk, meaning that if interest rates fall, the underlying debt may be repaid ahead of schedule, reducing the value of the Fund’s investments and if interest rates rise, there may be fewer prepayments, which would cause the average bond maturity to rise, increasing
the potential for the Fund to lose money. Mortgage-backed and other asset-backed securities are also susceptible to changes in lending standards and lending rates.
Certain mortgage-backed securities may be secured by pools of mortgages on single-family, multi-family properties, as well as commercial properties. Similarly, asset-backed securities may be secured by pools of loans, such as corporate loans, student loans, automobile loans and credit card receivables. The credit risk on such securities is affected by homeowners or borrowers defaulting on their loans. The values of assets underlying mortgage-backed and asset-backed securities, including CLOs, may decline and therefore may not be adequate to cover underlying investors. Some mortgage-backed and asset-backed securities have experienced extraordinary weakness and volatility in recent years. Possible legislation in the area of residential mortgages, credit cards, corporate loans and other loans that may collateralize the securities in which the Fund may invest could negatively impact the value of the Fund’s investments. To the extent the Fund focuses its investments in particular types of mortgage-backed or asset-backed securities, including CLOs, the Fund may be more susceptible to risk factors affecting such types of securities.
Angel Oak High Yield Opportunities ETF | Borrowing Risks And Leverage Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Borrowing Risks and Leverage Risks. Borrowing for investment purposes creates leverage, which will exaggerate the effect of any change in the value of securities in the Fund’s portfolio on the Fund’s net asset value (“NAV”) and, therefore, may increase the volatility of the Fund. Money borrowed will be subject to interest and other costs (including commitment fees and/or the cost of maintaining minimum average balances). Unless the income and capital appreciation, if any, on securities acquired with borrowed funds exceed the cost of borrowing, the use of leverage will diminish the investment performance of the Fund.
Angel Oak High Yield Opportunities ETF | Management Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.
Angel Oak High Yield Opportunities ETF | Floating Or Variable Rate Securities Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Floating or Variable Rate Securities Risk. Floating or variable rate securities pay interest at rates that adjust in response to changes in a specified interest rate or reset at predetermined dates (such as the end of a calendar quarter). Securities with floating or variable interest rates are generally less sensitive to interest rate changes than securities with fixed interest rates, but may decline in value if their interest rates do not rise as much, or as quickly, as comparable market interest rates. Although floating or variable rate securities are generally less sensitive to interest rate risk than fixed rate securities, they are subject to credit, liquidity and default risk and may be subject to legal or contractual restrictions on resale, which could impair their value.
Angel Oak High Yield Opportunities ETF | ETF Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock ETF Risks. The Fund is an ETF and may invest in other ETFs, and, as a result of this structure, is exposed directly or indirectly to the following risks:
◦Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as Authorized Participants (“APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV, which may also lead to a widening of bid/ask spreads quoted for Shares, and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
◦Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid/ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.
◦Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.
◦Trading. Although Shares are listed for trading on the NYSE Arca, Inc. (the “Exchange”) and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares, and may lead to a widening of bid/ask spreads quoted for Shares.
◦Cash Transactions Risk. Unlike certain ETFs, the Fund may effect creations and redemptions in cash or partially in cash. Therefore, it may be required to sell portfolio securities and subsequently recognize gains on such sales that the Fund
might not have recognized if it were to distribute portfolio securities in-kind. As such, investments in Shares may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind.
Angel Oak High Yield Opportunities ETF | ETF Risks, Authorized Participants, Market Makers And Liquidity Providers Concentration Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as Authorized Participants (“APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV, which may also lead to a widening of bid/ask spreads quoted for Shares, and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
Angel Oak High Yield Opportunities ETF | ETF Risks, Costs Of Buying Or Selling Shares Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid/ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.
Angel Oak High Yield Opportunities ETF | ETF Risks, Shares May Trade At Prices Other Than NAV Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.
Angel Oak High Yield Opportunities ETF | ETF Risks Member, Trading Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Trading. Although Shares are listed for trading on the NYSE Arca, Inc. (the “Exchange”) and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares, and may lead to a widening of bid/ask spreads quoted for Shares.
Angel Oak High Yield Opportunities ETF | ETF Risks, Cash Transactions Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Cash Transactions Risk. Unlike certain ETFs, the Fund may effect creations and redemptions in cash or partially in cash. Therefore, it may be required to sell portfolio securities and subsequently recognize gains on such sales that the Fund
might not have recognized if it were to distribute portfolio securities in-kind. As such, investments in Shares may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind.
Angel Oak High Yield Opportunities ETF | Liquidity And Valuation Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Liquidity and Valuation Risks. It may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price, or the price at which it has been valued for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to sell securities for what the Adviser believes is the appropriate price of the investment. Valuation of portfolio investments may be difficult, such as during periods of market turmoil or reduced liquidity and for investments that trade infrequently or irregularly. In these and other circumstances, an investment may be valued using fair value methodologies, which are inherently subjective, reflect good faith judgments based on available information and may not accurately estimate the price at which the Fund could sell the investment at that time. Based on its investment strategies, a significant portion of the Fund’s investments can be difficult to value and potentially less liquid and therefore particularly prone to these risks.
Angel Oak High Yield Opportunities ETF | Rating Agencies Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Rating Agencies Risks. Ratings are not an absolute standard of quality, but rather general indicators that reflect only the view of the originating rating agencies from which an explanation of the significance of such ratings may be obtained. There is no assurance that a particular rating will continue for any given period of time or that any such rating will not be revised downward or withdrawn entirely. Such changes may negatively affect the liquidity or market price of the securities in which the Fund invests. The ratings of Structured Products may not adequately reflect the credit risk of those assets due to their structure.
Angel Oak High Yield Opportunities ETF | Repurchase Agreement Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Repurchase Agreement Risks. Repurchase agreements typically involve the acquisition by the Fund of fixed-income securities from a selling financial institution such as a bank or broker-dealer. The Fund may incur a loss if the other party to a repurchase agreement is unwilling or unable to fulfill its contractual obligations to repurchase the underlying security.
Angel Oak High Yield Opportunities ETF | Reverse Repurchase Agreement Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Reverse Repurchase Agreement Risks. A reverse repurchase agreement is the sale by the Fund of a debt obligation to a party for a specified price, with the simultaneous agreement by the Fund to repurchase that debt obligation from that party on a future date at a higher price. Similar to borrowing, reverse repurchase agreements provide the Fund with cash for investment purposes, which creates leverage and subjects the Fund to the risks of leverage. Reverse repurchase agreements also involve the risk that the other party may fail to return the securities in a timely manner or at all. The Fund could lose money if it is unable to recover the securities and/or if the value of collateral held by the Fund, including the value of the investments made with cash collateral, is less than the value of securities.
Angel Oak High Yield Opportunities ETF | Unrated Securities Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Unrated Securities Risks. Unrated securities may be less liquid than comparable rated securities and involve the risk that Angel Oak may not accurately evaluate the security’s comparative credit rating.
Angel Oak High Yield Opportunities ETF | Floating Rate Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Floating Rate Risk. Instruments in which a Fund invests may pay interest at floating rates or may be subject to interest caps or floors tied to floating rates. A Fund and issuers of instruments in which a Fund invests may also obtain financing at floating rates. Derivative instruments utilized by a Fund and/or issuers of instruments in which a Fund may invest may also reference floating rates. A Fund also may utilize leverage or borrowings primarily based on floating rates. Some instruments in which a Fund has invested are or were tied to forms of the London Interbank Offered Rate (“LIBOR”). LIBOR was the basic rate of interest used in lending transactions between banks on the London interbank market and has been widely used as a reference for setting the interest rate on loans globally. As a result of benchmark reforms, publication of most LIBOR settings has ceased. Some LIBOR settings continue to be published but only on a temporary, synthetic and non-representative basis. All such synthetic LIBOR settings are expected to be discontinued by September 30, 2024. When publication of applicable synthetic LIBOR settings ceases, any still outstanding instruments or investments using synthetic LIBOR settings are expected to transition to alternative floating rate benchmarks. Regulated entities have generally ceased entering into new LIBOR contracts in connection with regulatory requirements. As a result of legislative mechanisms and industry-wide efforts to replace LIBOR with alternative floating-rate benchmarks, LIBOR has been replaced with an alternative already in many instruments. The transition from LIBOR may have effects on the value, liquidity or return on certain Fund investments that continue to reference or previously referenced LIBOR. In addition, there may be costs associated with the transition from LIBOR. Any pricing adjustments to a Fund’s investments resulting from the transition to an alternative reference rate may also adversely affect the Fund’s performance and/or NAV. To the extent that any replacement rate differs from that utilized for a Structured Product that holds those securities, the Structured Product would experience an interest rate mismatch between its assets and liabilities. Some instruments that referenced LIBOR were transitioned to alternative reference rates as a result of certain legislative transition mechanisms such as the Adjustable Interest Rate (LIBOR) Act. This law provides a statutory fallback mechanism on a nationwide basis for certain contracts to replace LIBOR with a benchmark rate that is selected by the Board of Governors of the Federal Reserve System based on the Secured Overnight Financing Rate (“SOFR”) where the related contract contains no, or insufficient, fallback provisions. In addition, the transition from LIBOR to any alternative reference rate may also introduce operational risks in a Fund’s accounting, financial reporting, investment servicing, liability management and other aspects of the Fund’s business. Completion of the transition from LIBOR to alternative reference rates could lead to significant short-term and long-term uncertainty and market instability. It remains uncertain how such changes would affect a Fund, issuers of instruments in which a Fund invests and financial markets generally.
In addition, alteration of the terms of a debt instrument or a modification of the terms of other types of contracts to replace LIBOR or another interbank offered rate (“IBOR”) with a new reference rate could result in a taxable exchange and the realization of income and gain/loss for U.S. federal income tax purposes. The IRS has issued final regulations regarding the tax consequences of the transition from IBOR to a new reference rate in debt instruments and non-debt contracts. Under the final regulations, alteration or modification of the terms of a debt instrument to replace an operative rate that uses a discontinued IBOR with a qualified rate (as defined in the final regulations) including true up payments equalizing the fair market value of contracts before and after such IBOR transition, to add a qualified rate as a fallback rate to a contract whose operative rate uses a discontinued IBOR or to replace a fallback rate that uses a discontinued IBOR with a qualified rate would not be taxable. The IRS may provide additional guidance, with potential retroactive effect.
Angel Oak High Yield Opportunities ETF | Large Shareholder Transactions Risk Member  
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Risk [Text Block] rr_RiskTextBlock Large Shareholder Transactions Risk. Shares of the Fund are offered to certain other investment companies (including those that are part of the same group of investment companies as the Fund), large retirement plans and other large investors. In addition, a third party investor, the Adviser or an affiliate of the Adviser, an AP, a market maker, or another entity may invest in the Fund and hold its investment for a limited period of time. As a result, the Fund is subject to the risk that those shareholders may purchase or redeem a large amount of shares of the Fund. To satisfy such large shareholder redemptions, the Fund may have to sell portfolio securities at times when it would not otherwise do so, which may negatively impact the Fund’s NAV and liquidity. In addition, large purchases of Fund shares could adversely affect the Fund’s performance to the extent that the Fund does not immediately invest cash it receives and therefore holds more cash than it ordinarily would. Large shareholder activity could also generate increased transaction costs and cause adverse tax consequences. In addition, transactions by large shareholders may account for a large percentage of the trading volume on the Exchange and may, therefore, have a material effect on the market price of the Shares.
Angel Oak High Yield Opportunities ETF | Illiquid Investments Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Illiquid Investments Risks. The Fund may, at times, hold illiquid investments, by virtue of the absence of a readily available market for certain of its investments, or because of legal or contractual restrictions on sales. The Fund could lose money if it is unable to dispose of an investment at a time or price that is most beneficial to the Fund.
Angel Oak High Yield Opportunities ETF | Regulatory And Legal Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Regulatory and Legal Risks. U.S. and non-U.S. government agencies and other regulators regularly adopt new regulations and legislatures enact new statutes that affect the investments held by the Fund, the strategies used by the Fund or the level of regulation or taxation that applies to the Fund. These statutes and regulations may impact the investment strategies, performance, costs and operations of the Fund or the taxation of its shareholders.
Angel Oak High Yield Opportunities ETF | RIC-Related Risks Of Investments Generating Non-Cash Taxable Income Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock RIC-Related Risks of Investments Generating Non-Cash Taxable Income. Certain of the Fund’s investments, particularly, debt obligations, such as zero coupon bonds, that will be treated as having “market discount” and/or original issue discount (“OID”) for U.S. federal income tax purposes and certain CLOs that may be considered passive foreign investment companies or controlled foreign corporations, will require the Fund to recognize taxable income in excess of the cash generated on those investments in that tax year, which could cause the Fund to have difficulty satisfying the annual distribution requirements applicable to regulated investment companies (“RICs”) and avoiding Fund-level U.S. federal income and/or excise taxes.
Angel Oak High Yield Opportunities ETF | Risks Relating To Fund’s RIC Status Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Risks Relating to Fund’s RIC Status. To qualify and remain eligible for the special tax treatment accorded to a RIC and its shareholders under the Internal Revenue Code of 1986, as amended, the Fund must meet certain source-of-income, asset diversification and annual distribution requirements. If the Fund fails to qualify as a RIC for any reason and becomes subject to corporate tax, the resulting corporate taxes could substantially reduce its net assets, the amount of income available for distribution and the amount of its distributions.
Angel Oak High Yield Opportunities ETF | Uncertain Tax Treatment Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Uncertain Tax Treatment. Below investment grade instruments may present special tax issues for the Fund. U.S. federal income tax rules are not entirely clear about issues such as when the Fund may cease accruing interest, OID or market discount, when and to what extent deductions may be taken for bad debts or worthless instruments, how payments received on obligations in default should be allocated between principal and income and whether exchanges of debt obligations in a bankruptcy or workout context are taxable, which may make it difficult for the Fund to satisfy the annual distribution requirements applicable to RICs.
Angel Oak High Yield Opportunities ETF | Sector Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.
Angel Oak High Yield Opportunities ETF | Bank Subordinated Debt Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Bank Subordinated Debt Risks. Banks may issue subordinated debt securities, which have a lower priority to full payment behind other more senior debt securities. In addition to the risks generally associated with fixed income instruments (e.g., interest rate risk, credit risk, etc.), bank subordinated debt is also subject to risks inherent to banks. Because banks are highly regulated and operate in a highly competitive environment, it may be difficult for a bank to meet its debt obligations. Banks also may be affected by changes in legislation and regulations applicable to the financial markets. Bank subordinated debt is often issued by smaller community banks that may be overly concentrated in a specific geographic region, lack the capacity to comply with new regulatory requirements or lack adequate capital.
Angel Oak High Yield Opportunities ETF | Preferred Securities Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Preferred Securities Risk. Preferred securities may pay fixed or adjustable rates of return and are subject to many of the risks associated with debt securities (e.g., interest rate risk, call risk and extension risk). In addition, preferred securities are subject to issuer-specific and market risks applicable generally to equity securities. Because many preferred securities allow the issuer to convert their preferred stock into common stock, preferred securities are often sensitive to declining common stock values. A company’s preferred securities generally pay dividends only after the company makes required payments to holders of its bonds and other debt. For this reason, the value of preferred securities will usually react more strongly than
bonds and other debt to actual or perceived changes in the company’s financial condition or prospects. Preferred securities of smaller companies may be more vulnerable to adverse developments than preferred stock of larger companies.
Angel Oak High Yield Opportunities ETF | U.S. Government Securities Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock U.S. Government Securities Risks. U.S. government securities are not guaranteed against price movement and may decrease in value. Some U.S. government securities are supported by the full faith and credit of the U.S. Treasury, while others may be supported only by the discretionary authority of the U.S. government to purchase certain obligations of a federal agency or U.S. government sponsored enterprise (“GSE”) or only by the right of the issuer to borrow from the U.S. Treasury. While the U.S. government provides financial support to such agencies and GSEs, no assurance can be given that the U.S. government will always do so. Other obligations are backed solely by the GSE’s own resources. Investments in securities issued by GSEs that are not backed by the U.S. Treasury are subject to higher credit risk than those that are backed by the U.S. Treasury.
Angel Oak High Yield Opportunities ETF | Equity Market Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Equity Market Risk. Equity securities are susceptible to general stock market fluctuations and to volatile increases and decreases in value. The equity market may experience declines, and companies whose equity securities are in the Fund’s portfolio may not increase their earnings at the rate anticipated. The Fund’s net asset value and investment return will fluctuate based upon changes in the value of its portfolio securities.
Angel Oak High Yield Opportunities ETF | Other Investment Companies Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Other Investment Companies Risks. The Fund will incur higher and duplicative expenses when it invests in ETFs and other investment companies. There is also the risk that the Fund may suffer losses due to the investment practices of the underlying funds. When the Fund invests in other investment companies, the Fund will be subject to substantially the same risks as those associated with the direct ownership of securities held by such investment companies. ETFs may be less liquid than other investments, and thus their share values more volatile than the values of the investments they hold. Investments in ETFs are also subject to the following risks: (i) the market price of an ETF’s shares may trade above or below their net asset value; (ii) an active trading market for an ETF’s shares may not develop or be maintained; and (iii) trading of an ETF’s shares may be halted for a number of reasons.
The Adviser may be subject to potential conflicts of interest in allocating the Fund’s assets to underlying funds, such as a potential conflict in selecting affiliated underlying funds over unaffiliated underlying funds. In addition, the Fund’s portfolio managers may be subject to potential conflicts of interest in allocating the Fund’s assets among underlying funds, as certain of the Fund’s portfolio managers may also manage an affiliated underlying fund in which the Fund may invest. Both the Adviser and the Fund’s portfolio managers have a fiduciary duty to the Fund to act in the Fund’s best interest when selecting underlying funds. Under the oversight of the Board of Trustees, the Adviser will carefully analyze any such potential conflicts of interest and will take steps to minimize and, where possible, eliminate them.
Angel Oak High Yield Opportunities ETF | Derivatives Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Derivatives Risks. The Fund’s derivatives and other similar instruments (collectively referred to in this section as “derivatives” or “derivative instruments”) have risks, including the imperfect correlation between the value of such instruments and the underlying assets, rate or index; the loss of principal, including the potential loss of amounts greater than the initial amount invested in the derivative instrument; the possible default of the other party to the transaction; and illiquidity of the derivative investments. Changes in the value of a derivative may also create margin delivery or settlement payment obligations for the Fund. If a counterparty becomes bankrupt or otherwise fails to perform its obligations under a derivative contract due to financial difficulties, the Fund may experience significant delays in obtaining any recovery under the derivative contract in a bankruptcy or other reorganization proceeding. Certain derivatives may give rise to a form of leverage. Leverage magnifies the potential for gain and the risk of loss. The use of derivatives is also subject to operational risk which refers to risk related to potential operational issues, including documentation issues, settlement issues, system failures, inadequate controls, and human error, as well as legal risk which refers to the risk of loss resulting from insufficient documentation, insufficient capacity or authority of counterparty, or legality or enforceability of a contract. Derivatives are also subject to market risk which refers to the risk that markets could experience a change in volatility that adversely impacts fund returns and the fund’s obligations and exposures. Certain of the Fund’s transactions in derivatives could also affect the amount, timing and character of distributions to shareholders, which may result in the Fund realizing more short-term capital gain and ordinary income subject to tax at ordinary income tax rates than it would if it did not engage in such transactions, which may adversely impact the Fund’s after-tax returns.
The derivative instruments and techniques that the Fund may principally use include:
◦Futures. A futures contract is a standardized agreement to buy or sell a specific quantity of an underlying instrument at a specific price at a specific future time. A decision as to whether, when and how to use futures involves the exercise of skill and judgment and even a well-conceived futures transaction may be unsuccessful because of market behavior or unexpected events. In addition to the derivatives risks discussed above, the prices of futures can be highly volatile, using futures can lower total return, and the potential loss from futures can exceed the Fund’s initial investment in such contracts.
◦Options. If the Fund buys an option, it buys a legal contract giving it the right to buy or sell a specific amount of the underlying instrument or futures contract on the underlying instrument at an agreed-upon price typically in exchange for a premium paid by the Fund. If the Fund sells an option, it sells to another person the right to buy from or sell to the Fund a specific amount of the underlying instrument or futures contract on the underlying instrument at an agreed-upon price typically in exchange for a premium received by the Fund. A decision as to whether, when and how to use options involves the exercise of skill and judgment and even a well-conceived option transaction may be unsuccessful because of market behavior or unexpected events. The prices of options can be highly volatile and the use of options can lower total returns.
◦Swaps. A swap contract is an agreement between two parties pursuant to which the parties exchange payments at specified dates on the basis of a specified notional amount, with the payments calculated by reference to specified securities, indexes, reference rates, currencies or other instruments. Swap agreements are particularly subject to counterparty credit, liquidity, valuation, correlation, leverage, operational and legal risk. Swaps could result in losses if interest rate or foreign currency exchange rates or credit quality changes are not correctly anticipated by the Fund or if the reference index, security or investments do not perform as expected. The use of credit default swaps can result in losses if the Fund’s assumptions regarding the creditworthiness of the underlying obligation prove to be incorrect.
Angel Oak High Yield Opportunities ETF | Foreign Securities Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Foreign Securities Risks. Investments in securities or other instruments of non-U.S. issuers involve certain risks not involved in domestic investments and may experience more rapid and extreme changes in value than investments in securities of U.S. companies. Financial markets in foreign countries often are not as developed, efficient or liquid as financial markets in the United States, and therefore, the prices of non-U.S. securities and instruments can be more volatile. In addition, the Fund will be subject to risks associated with adverse political and economic developments in foreign countries, which may include the imposition of economic sanctions or other similar measures. Generally, there is less readily available and reliable information about non-U.S. issuers due to less rigorous disclosure or accounting standards and regulatory practices.
Angel Oak High Yield Opportunities ETF | Bloomberg U.S. High Yield Corporate Bond Index (reflects no deduction for fees, expenses, and taxes)  
Prospectus [Line Items] rr_ProspectusLineItems  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, and taxes)
Label rr_AverageAnnualReturnLabel Bloomberg U.S. High Yield Corporate Bond Index (reflects no deduction for fees, expenses, and taxes)
1 Year rr_AverageAnnualReturnYear01 13.44%
5 Years rr_AverageAnnualReturnYear05 5.37%
10 Years rr_AverageAnnualReturnYear10 4.60%
Since Inception rr_AverageAnnualReturnSinceInception 8.90%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2009
Angel Oak High Yield Opportunities ETF | Angel Oak High Yield Opportunities ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol AOHY
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.55%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.55% [1]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 56
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 176
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 307
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 689
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 12.54%
5 Years rr_AverageAnnualReturnYear05 5.73%
10 Years rr_AverageAnnualReturnYear10 4.95%
Since Inception rr_AverageAnnualReturnSinceInception 7.59%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2009
Angel Oak High Yield Opportunities ETF | Angel Oak High Yield Opportunities ETF | After Taxes on Distributions  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions1
1 Year rr_AverageAnnualReturnYear01 9.51% [2]
5 Years rr_AverageAnnualReturnYear05 3.27% [2]
10 Years rr_AverageAnnualReturnYear10 2.38% [2]
Since Inception rr_AverageAnnualReturnSinceInception 4.81% [2]
Angel Oak High Yield Opportunities ETF | Angel Oak High Yield Opportunities ETF | After Taxes on Distributions and Sales  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares1
1 Year rr_AverageAnnualReturnYear01 7.33% [2]
5 Years rr_AverageAnnualReturnYear05 3.33% [2]
10 Years rr_AverageAnnualReturnYear10 2.62% [2]
Since Inception rr_AverageAnnualReturnSinceInception 4.79% [2]
Angel Oak Mortgage-Backed Securities ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading ANGEL OAK MORTGAGE-BACKED SECURITIES ETF
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The Angel Oak Mortgage-Backed Securities ETF (the “Fund”) seeks total return.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock The following table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund (“Shares”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination September 30, 2025
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example above, affect the Fund’s performance. For the most recent fiscal year, the portfolio turnover rate for the Angel Oak Total Return Bond Fund (the “Predecessor Total Return Fund”) was 53% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 53.00%
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Restated to reflect the unitary fee structure of the Fund.
Expense Example [Heading] rr_ExpenseExampleHeading Expense Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then continue to hold or sell all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same (taking into account the Expense Cap only in the first year). The example does not take into account brokerage commissions that you may pay on your purchases and sales of Shares.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund will, under normal circumstances, invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in mortgage-backed securities (“MBS”). For purposes of this 80% investment policy, the Adviser will select the Fund’s investments in mortgage-backed securities within a range of instruments across various asset classes, including: agency and non-agency residential mortgage-backed securities (“RMBS”), agency and non-agency commercial mortgage-backed securities (“CMBS”),
collateralized debt obligations (“CDOs”) that include a significant majority of residential or commercial mortgages; and collateralized mortgage obligations (“CMOs”).
The Fund may invest up to 20% of its net assets in a variety of asset classes, including: asset-backed securities (“ABS”), including securities or securitizations backed by assets such as credit card receivables, student loans, automobile loans, and residential and commercial real estate, and other debt securitizations (collectively with CDOs and CMOs, “Structured Products”); secured and unsecured consumer loans, commercial loans and pools of such loans (collectively, “Loans”); corporate debt, including bank-issued subordinated debt; municipal securities; U.S. Treasury and U.S. government agency securities; and derivative instruments that invest substantially all of their assets in, are linked to, or otherwise provide investment exposure to, bonds.
The Fund may invest in the securities of other investment companies, including closed-end investment companies, exchange-traded funds (“ETFs”) or business development companies (“BDCs”). The other investment companies in which the Fund invests may be part of the same group of investment companies as the Fund.
The Fund will concentrate its investments in agency and non-agency RMBS and CMBS and mortgage loans (“Mortgage Related Instruments”), which are credit instruments that are backed by real estate and, consequently, subject to some of the same risks as those associated with the real estate industry. This means that, under normal circumstances, the Fund will invest more than 25% of its assets in Mortgage Related Instruments (measured at the time of purchase). The Fund will not concentrate its investments in any other group of industries. The Fund’s policy to concentrate its investments in Mortgage Related Instruments is fundamental and may not be changed without shareholder approval.
The Fund is a non-diversified portfolio under the Investment Company Act of 1940 (the “1940 Act”), meaning it may invest a greater percentage of its assets in a single or limited number of issuers than a diversified fund.
The fixed income instruments in which the Fund invests may include those of issuers from the United States and other countries, without limitation. The Fund’s investments in foreign debt securities will typically be denominated in U.S. dollars.
The Fund may invest up to 15% of its net assets in investments that are deemed to be illiquid, which may include private placements, certain Rule 144A securities (which are subject to resale restrictions), and securities of issuers that are bankrupt or in default.
The Fund may invest in securities of any maturity and duration. Under normal market conditions, the Fund’s target portfolio duration is two to eight years, and the target weighted average maturity of the Fund’s portfolio is two to fifteen years. Maturity refers to the length of time until a debt security’s principal is repaid with interest. Duration is a measure used to determine the sensitivity of a security’s price to changes in interest rates. Duration incorporates a security’s yield, coupon, final maturity, call and put features, and prepayment exposure into one measure with a higher duration indicating greater sensitivity to interest rates. For example, if a portfolio has a duration of two years, and interest rates increase (fall) by 1%, the portfolio would decline (increase) in value by approximately 2%. However, duration may not accurately reflect the true interest rate sensitivity of instruments held by the Fund and, therefore the Fund’s exposure to changes in interest rates.
The Fund may invest, without limitation, in securities of any quality and maturity, including high-yield securities (also known as “junk bonds”), and securities that are not rated by any rating agencies. Under normal market conditions, the Fund will not invest more than 30% of its total assets in high-yield securities. These high-yield securities will be rated BB+ or lower by Standard & Poor’s Rating Group (“S&P”) or will be of equivalent quality rating from another Nationally Recognized Statistical Ratings Organization. If a security is unrated, the Adviser may determine whether it is of comparable quality and therefore eligible for the Fund’s investment.
In pursuing its investment objective or for hedging purposes, the Fund may utilize borrowing and various types of derivative instruments, including swaps, futures contracts, and options, although not all such derivatives will be used at all times. Such derivatives may trade over-the-counter or on an exchange and may principally be used for one or more of the following purposes: speculation, currency hedging, duration management, credit deterioration hedging, hedges against broad market movements, or to pursue the Fund’s investment objective. The Fund may borrow to the maximum extent permitted by applicable law. The Fund may also invest in repurchase agreements and borrow through reverse repurchase agreements.
The Fund’s allocation of its assets into various asset classes within its investment strategy will depend on the views of the Adviser as to the best value relative to what is currently presented in the marketplace.
Investment decisions are made based on fundamental research and analysis to identify issuers with the ability to improve their credit profile over time with attractive valuations, resulting in both income and potential capital appreciation. In selecting investments, including Structured Products, the Adviser may consider maturity, yield and ratings information and opportunities for price appreciation among other criteria. The Adviser also analyzes a variety of factors when selecting investments for the Fund, such as collateral quality, credit support, structure and market conditions. The Adviser attempts to diversify risks that arise from position sizes, geography, ratings, duration, deal structure and collateral values. The Adviser seeks to limit risk of principal by targeting assets that it considers undervalued.
As part of its investment process, the Adviser also considers certain environmental, social and governance (“ESG”) and sustainability factors that it believes could have a material negative or positive impact on the risk profiles of the issuers or underlying collateral assets of certain securities in which the Fund may invest. These determinations may not be conclusive, and securities that may be negatively impacted by such factors may be purchased and retained by the Fund while the Fund may divest or not invest in securities that may be positively impacted by such factors. The Adviser may sell investments, including Structured Products, if it determines that any of the mentioned factors have changed materially from its initial analysis or that other factors indicate that an investment is no longer earning a return commensurate with its risk or that a different security will better help the Fund achieve its investment objective.
The Fund is an actively managed ETF, which is a fund that trades like other publicly-traded securities. The Fund is not an index fund and does not seek to replicate the performance of a specified index.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund will, under normal circumstances, invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in mortgage-backed securities (“MBS”). For purposes of this 80% investment policy, the Adviser will select the Fund’s investments in mortgage-backed securities within a range of instruments across various asset classes, including: agency and non-agency residential mortgage-backed securities (“RMBS”), agency and non-agency commercial mortgage-backed securities (“CMBS”), collateralized debt obligations (“CDOs”) that include a significant majority of residential or commercial mortgages; and collateralized mortgage obligations (“CMOs”). The Fund may invest up to 20% of its net assets in a variety of asset classes, including: asset-backed securities (“ABS”), including securities or securitizations backed by assets such as credit card receivables, student loans, automobile loans, and residential and commercial real estate, and other debt securitizations (collectively with CDOs and CMOs, “Structured Products”); secured and unsecured consumer loans, commercial loans and pools of such loans (collectively, “Loans”); corporate debt, including bank-issued subordinated debt; municipal securities; U.S. Treasury and U.S. government agency securities; and derivative instruments that invest substantially all of their assets in, are linked to, or otherwise provide investment exposure to, bonds.
Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following performance information indicates some of the risks of investing in the Fund. The bar chart shows the Fund’s performance for the calendar years ended December 31. The table illustrates how the average annual total returns of the Fund compare over time to those of a broad-based securities market index. Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.angeloakcapital.com or by calling (855) 751-4324 (toll free).
The Fund will be the successor to the investment performance of the Predecessor Total Return Fund as a result of the expected reorganization of the Predecessor Total Return Fund into the Fund on or about February 16, 2024. Accordingly, the performance information shown below for periods prior to such date is that of the Predecessor Total Return Fund’s Institutional Shares. The Predecessor Total Return Fund was managed by the same portfolio managers as the Fund.
On December 31, 2022, changes were made to the Predecessor Total Return Fund’s investment strategies. As a result, the Predecessor Total Return Fund’s performance during periods prior to this date may have differed had the Predecessor Total Return Fund’s current investment policies and strategies been in place at those times or had it been structured as an ETF. The Fund has a higher management fee than the Predecessor Total Return Fund, and consequently, the performance of the Predecessor Total Return Fund would have been lower if the higher fee had been in effect.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following performance information indicates some of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone (855) 751-4324
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.angeloakcapital.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The table illustrates how the average annual total returns of the Fund compare over time to those of a broad-based securities market index. Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.
Bar Chart [Heading] rr_BarChartHeading Annual Total Returns(for years ended December 31st)
Annual Return 2022 rr_AnnualReturn2022 (12.62%)
Annual Return 2023 rr_AnnualReturn2023 5.46%
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock During the period shown in the chart, the highest quarterly return was 6.25% (for the quarter ended December 31, 2023) and the lowest quarterly return was -4.42% (for the quarter ended June 30, 2022).
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2023
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 6.25%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Jun. 30, 2022
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (4.42%)
Performance Table Heading rr_PerformanceTableHeading Angel Oak Mortgage-Backed Securities ETF Average Annual Total Returns
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher In certain cases, the figure representing “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. In certain cases, the figure representing “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
Angel Oak Mortgage-Backed Securities ETF | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock There may be circumstances that could prevent the Fund from achieving its investment objective and you may lose money by investing in the Fund.
Angel Oak Mortgage-Backed Securities ETF | Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock An investment in the Fund is not a deposit at a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Angel Oak Mortgage-Backed Securities ETF | High-Yield Securities Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock High-Yield Securities Risks. High-yield securities (also known as junk bonds) carry a greater degree of risk and are more volatile than investment grade securities and are considered speculative. High-yield securities may be issued by companies that are restructuring, are smaller and less creditworthy, or are more highly indebted than other companies. This means that they may have more difficulty making scheduled payments of principal and interest. Changes in the value of high-yield securities are influenced more by changes in the financial and business position of the issuing company than by changes in interest rates when compared to investment grade securities. The Fund’s investments in high-yield securities expose it to a substantial degree of credit risk.
Angel Oak Mortgage-Backed Securities ETF | Fixed-Income Instruments Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Fixed-Income Instruments Risks. The Fund will invest in fixed-income instruments and securities. Such investments may be secured, partially secured or unsecured and may be unrated, and whether or not rated, may have speculative characteristics. The market price of the Fund’s investments will change in response to changes in interest rates and other factors. Generally, when interest rates rise, the values of fixed-income instruments fall, and vice versa. In typical interest rate environments, the prices of longer-term fixed-income instruments generally fluctuate more than the prices of shorter-term fixed-income instruments as interest rates change. In addition, a fund with a longer average portfolio duration will be more sensitive to changes in interest rates than a fund with a shorter average portfolio duration. A fund with a negative average portfolio duration may decline in value as interest rates decrease. Most high yield investments pay a fixed rate of interest and are therefore vulnerable to inflation risk (inflation rates are currently elevated relative to normal conditions). The obligor of a fixed-income instrument may not be able or willing to pay interest or to repay principal when due in accordance with the terms of the associated agreement.
Angel Oak Mortgage-Backed Securities ETF | General Market Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock General Market Risk. The capital markets may experience periods of disruption, instability and volatility. Political, geopolitical, natural and other events, including war, terrorism, trade disputes, government shutdowns, market closures, natural and environmental disasters, epidemics, pandemics and other public health crises and related events have led, and in the future may lead, to economic uncertainty, decreased economic activity, increased market volatility and other disruptive effects on U.S. and global economies and markets. Such conditions may materially and adversely affect the markets globally and in the jurisdictions in which the Fund invests, which may have a negative impact on the Fund’s performance. The Fund’s NAV and investment return will fluctuate based upon changes in the value of its portfolio securities.
Angel Oak Mortgage-Backed Securities ETF | Credit Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Credit Risk. Credit risk is the risk that the Fund could lose money if the issuer or guarantor of a fixed income security, or the counterparty to a derivative contract, is unable or unwilling to meet its financial obligations.
Angel Oak Mortgage-Backed Securities ETF | Interest Rate Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Interest Rate Risk. The Fund is exposed to risks associated with changes in interest rates, including the possibility that, in a period of rising interest rates, securities may exhibit additional volatility and may lose value.
Angel Oak Mortgage-Backed Securities ETF | Structured Products Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Structured Products Risks. The Fund may invest in Structured Products, including CLOs, CDOs, CMOs, and other asset-backed securities and debt securitizations. Some Structured Products have credit ratings, but are typically issued in various classes with various priorities. Normally, Structured Products are privately offered and sold (that is, they are not registered under the securities laws), which means less information about the security may be available as compared to publicly offered securities and only certain institutions may buy and sell them. As a result, investments in Structured Products may be characterized by the Fund as illiquid securities. An active dealer market may exist for Structured Products that qualify for Rule 144A transactions, but there can be no assurance that such a market will exist or will be active enough for the Fund to sell such securities. In addition to the typical risks associated with fixed-income securities and asset-backed securities, CLOs and CDOs carry additional risks including, but not limited to: (i) the possibility that distributions from collateral securities will not be adequate to make interest or other payments; (ii) the risk that the collateral may default, decline in value or quality or be downgraded by a rating agency; (iii) the Fund may invest in tranches of Structured Products that are subordinate to other tranches; (iv) the structure and complexity of the transaction and the legal documents could lead to disputes among investors regarding the characterization of proceeds; (v) risk of forced “fire sale” liquidation due to technical defaults such as coverage test failures; and (vi) the Structured Product’s manager may perform poorly. The senior and junior tranches of Structured Products may have floating or variable interest rates based on LIBOR and are subject to the risks associated with securities tied to LIBOR, including the risks associated with the pending replacement of LIBOR with an alternative reference rate. The Fund may also invest in the equity tranches of a Structured Product, which typically represent the first loss position in the Structured Product, are unrated and are subject to higher risks. Equity tranches of Structured Products typically do not have a fixed coupon and payments on equity tranches will be based on the income received from the underlying collateral and the payments made to the senior tranches, both of which may be based on floating rates based on LIBOR.
Angel Oak Mortgage-Backed Securities ETF | Municipal Securities Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Municipal Securities Risk. The yields on municipal bonds are dependent on a variety of factors, including prevailing interest rates and the condition of the general money market and the municipal bond market, the size of a particular offering, the maturity of the obligation and the rating of the issuer. The market value of municipal bonds will vary with changes in interest rate levels and as a result of changing evaluations of the ability of bond issuers to meet interest and principal payments.The amount of public information available about the municipal securities is generally less than that for corporate bonds and certain other securities. The secondary market for municipal securities also tends to be less well-developed or liquid than many other securities markets. In addition, certain state and municipal governments that issue securities may be under significant economic and financial stress and may not be able to satisfy their obligations. In addition, issuers of municipal securities might seek protection under the bankruptcy laws, and holders of municipal bonds could experience delays in collecting principal and interest and may be unable to collect all principal and interest to which they are entitled.
Angel Oak Mortgage-Backed Securities ETF | Extension Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Extension Risk. An issuer could exercise its right to pay principal on an obligation held by the Fund (such as a mortgage-backed security) later than expected. This may happen when there is a rise in interest rates. Under these circumstances, the value of the obligation will decrease, and the Fund will also suffer from the inability to reinvest in higher yielding securities.
Angel Oak Mortgage-Backed Securities ETF | Prepayment Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Prepayment Risk. When interest rates decline, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates.
Angel Oak Mortgage-Backed Securities ETF | Mortgage-Backed And Asset-Backed Securities Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Mortgage-Backed and Asset-Backed Securities Risks. Mortgage-backed and other asset-backed securities are subject to the risks of traditional fixed-income instruments. However, they are also subject to prepayment risk and extension risk, meaning that if interest rates fall, the underlying debt may be repaid ahead of schedule, reducing the value of the Fund’s investments and if interest rates rise, there may be fewer prepayments, which would cause the average bond maturity to rise, increasing the potential for the Fund to lose money. Mortgage-backed and other asset-backed securities are also susceptible to changes in lending standards and lending rates.
Certain mortgage-backed securities may be secured by pools of mortgages on single-family, multi-family properties, as well as commercial properties. Similarly, asset-backed securities may be secured by pools of loans, such as corporate loans, student loans, automobile loans and credit card receivables. The credit risk on such securities is affected by homeowners or borrowers defaulting on their loans. The values of assets underlying mortgage-backed and asset-backed securities may decline and therefore may not be adequate to cover underlying investors. Some mortgage-backed and asset-backed securities have experienced extraordinary weakness and volatility in recent years. Possible legislation in the area of residential mortgages,
credit cards, corporate loans and other loans that may collateralize the securities in which the Fund may invest could negatively impact the value of the Fund’s investments. To the extent the Fund focuses its investments in particular types of mortgage-backed or asset-backed securities, the Fund may be more susceptible to risk factors affecting such types of securities.
Angel Oak Mortgage-Backed Securities ETF | Borrowing Risks And Leverage Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Borrowing Risks and Leverage Risks. Borrowing for investment purposes creates leverage, which will exaggerate the effect of any change in the value of securities in the Fund’s portfolio on the Fund’s net asset value (“NAV”) and, therefore, may increase the volatility of the Fund. Money borrowed will be subject to interest and other costs (including commitment fees and/or the cost of maintaining minimum average balances). Unless the income and capital appreciation, if any, on securities acquired with borrowed funds exceed the cost of borrowing, the use of leverage will diminish the investment performance of the Fund.
Angel Oak Mortgage-Backed Securities ETF | Concentration In Mortgage Loans, RMBS And CMBS Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Concentration in Mortgage Loans, RMBS and CMBS Risk. The Fund’s assets will be concentrated in mortgage loans, RMBS (agency and non-agency) and CMBS, which are credit instruments that are backed by real estate and, consequently, subject to some of the same risks as those associated with the real estate industry. The Fund’s concentration in such instruments potentially exposes the Fund to greater risks than companies that invest in multiple sectors. The risks of concentrating in mortgage loans, RMBS (agency and non-agency) and CMBS include susceptibility to changes in lending standards, interest rates and lending rates, the risks associated with the market’s perception of issuers, the creditworthiness of the parties involved and investing in real estate securities.
Angel Oak Mortgage-Backed Securities ETF | Management Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.
Angel Oak Mortgage-Backed Securities ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Non-Diversification Risk. The Fund is classified as “non-diversified” under the 1940 Act. As a result, it can invest a greater portion of its assets in obligations of a single issuer than a “diversified” fund. The Fund may therefore be more susceptible than a diversified fund to being adversely affected by a single corporate, economic, political or regulatory occurrence.
Angel Oak Mortgage-Backed Securities ETF | Residential Loans And Mortgages Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Residential Loans and Mortgages Risk. In addition to interest rate, default and other risks of fixed income securities, investments in whole loans and debt instruments backed by residential loans or mortgages, (or pools of loans or mortgages) carry additional risks, including the possibility that the quality of the collateral may decline in value and the potential for the liquidity of residential loans and mortgages to vary over time. Because they do not trade in a liquid market, residential loans typically can only be sold to a limited universe of institutional investors and may be difficult for the Fund to value. In addition, in the event that a loan is foreclosed on, the Fund could become the owner (in whole or in part) of any collateral, which may include, among other things, real estate or other real or personal property, and the Fund would bear the costs and liabilities of owning, holding or disposing of such property.
Angel Oak Mortgage-Backed Securities ETF | Floating Or Variable Rate Securities Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Floating or Variable Rate Securities Risk. Floating or variable rate securities pay interest at rates that adjust in response to changes in a specified interest rate or reset at predetermined dates (such as the end of a calendar quarter). Securities with floating or variable interest rates are generally less sensitive to interest rate changes than securities with fixed interest rates, but may decline in value if their interest rates do not rise as much, or as quickly, as comparable market interest rates. Although floating or variable rate securities are generally less sensitive to interest rate risk than fixed rate securities, they are subject to credit, liquidity and default risk and may be subject to legal or contractual restrictions on resale, which could impair their value.
Angel Oak Mortgage-Backed Securities ETF | ETF Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock ETF Risks. The Fund is an ETF and may invest in other ETFs, and, as a result of this structure, is exposed directly or indirectly to the following risks:
◦Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as Authorized Participants (“APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV, which may also lead to a widening of bid/ask spreads quoted for Shares, and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
◦Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid/ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.
◦Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant. Because securities held by the Fund may trade on foreign exchanges that are closed when the Fund’s primary listing exchange is open, the Fund is likely to experience premiums or discounts greater than those of domestic ETFs. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.
◦Trading. Although Shares are listed for trading on the NYSE Arca, Inc. (the “Exchange”) and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares, and may lead to a widening of bid/ask spreads quoted for Shares.
◦Cash Transactions Risk. Unlike certain ETFs, the Fund may effect creations and redemptions in cash or partially in cash. Therefore, it may be required to sell portfolio securities and subsequently recognize gains on such sales that the Fund might not have recognized if it were to distribute portfolio securities in-kind. As such, investments in Shares may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind.
Angel Oak Mortgage-Backed Securities ETF | ETF Risks, Authorized Participants, Market Makers And Liquidity Providers Concentration Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as Authorized Participants (“APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV, which may also lead to a widening of bid/ask spreads quoted for Shares, and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
Angel Oak Mortgage-Backed Securities ETF | ETF Risks, Costs Of Buying Or Selling Shares Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid/ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.
Angel Oak Mortgage-Backed Securities ETF | ETF Risks, Shares May Trade At Prices Other Than NAV Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant. Because securities held by the Fund may trade on foreign exchanges that are closed when the Fund’s primary listing exchange is open, the Fund is likely to experience premiums or discounts greater than those of domestic ETFs. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.
Angel Oak Mortgage-Backed Securities ETF | ETF Risks Member, Trading Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Trading. Although Shares are listed for trading on the NYSE Arca, Inc. (the “Exchange”) and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares, and may lead to a widening of bid/ask spreads quoted for Shares.
Angel Oak Mortgage-Backed Securities ETF | ETF Risks, Cash Transactions Risk Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Cash Transactions Risk. Unlike certain ETFs, the Fund may effect creations and redemptions in cash or partially in cash. Therefore, it may be required to sell portfolio securities and subsequently recognize gains on such sales that the Fund might not have recognized if it were to distribute portfolio securities in-kind. As such, investments in Shares may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind.
Angel Oak Mortgage-Backed Securities ETF | Liquidity And Valuation Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Liquidity and Valuation Risks. It may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price, or the price at which it has been valued for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to sell securities for what the Adviser believes is the appropriate price of the investment. Valuation of portfolio investments may be difficult, such as during periods of market turmoil or reduced liquidity and for investments that trade infrequently or irregularly. In these and other circumstances, an investment may be valued using fair value methodologies, which are inherently subjective, reflect good faith judgments based on available information and may not accurately estimate the price at which the Fund could sell the investment at that time. Based on its investment strategies, a significant portion of the Fund’s investments can be difficult to value and potentially less liquid and therefore particularly prone to these risks.
Angel Oak Mortgage-Backed Securities ETF | Rating Agencies Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Rating Agencies Risks. Ratings are not an absolute standard of quality, but rather general indicators that reflect only the view of the originating rating agencies from which an explanation of the significance of such ratings may be obtained. There is no assurance that a particular rating will continue for any given period of time or that any such rating will not be revised downward or withdrawn entirely. Such changes may negatively affect the liquidity or market price of the securities in which the Fund invests. The ratings of Structured Products may not adequately reflect the credit risk of those assets due to their structure.
Angel Oak Mortgage-Backed Securities ETF | Repurchase Agreement Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Repurchase Agreement Risks. Repurchase agreements typically involve the acquisition by the Fund of fixed-income securities from a selling financial institution such as a bank or broker-dealer. The Fund may incur a loss if the other party to a repurchase agreement is unwilling or unable to fulfill its contractual obligations to repurchase the underlying security.
Angel Oak Mortgage-Backed Securities ETF | Reverse Repurchase Agreement Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Reverse Repurchase Agreement Risks. A reverse repurchase agreement is the sale by the Fund of a debt obligation to a party for a specified price, with the simultaneous agreement by the Fund to repurchase that debt obligation from that party on a
future date at a higher price. Similar to borrowing, reverse repurchase agreements provide the Fund with cash for investment purposes, which creates leverage and subjects the Fund to the risks of leverage. Reverse repurchase agreements also involve the risk that the other party may fail to return the securities in a timely manner or at all. The Fund could lose money if it is unable to recover the securities and/or if the value of collateral held by the Fund, including the value of the investments made with cash collateral, is less than the value of securities.
Angel Oak Mortgage-Backed Securities ETF | Unrated Securities Risks Member  
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Risk [Text Block] rr_RiskTextBlock Unrated Securities Risks. The Fund may purchase unrated securities which are not rated by a rating agency if the Adviser determines that the security is of comparable quality to a rated security that the Fund may purchase. Unrated securities may be less liquid than comparable rated securities and involve the risk that the Adviser may not accurately evaluate the security’s comparative credit rating. Analysis of creditworthiness of issuers of high yield securities may be more complex than for issuers of higher-quality debt securities. To the extent that the Fund purchases unrated securities, the Fund’s success in achieving its investment objective may depend more heavily on the Adviser’s creditworthiness analysis than if the Fund invested exclusively in rated securities.
Angel Oak Mortgage-Backed Securities ETF | Floating Rate Risk Member  
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Risk [Text Block] rr_RiskTextBlock Floating Rate Risk. Instruments in which a Fund invests may pay interest at floating rates or may be subject to interest caps or floors tied to floating rates. A Fund and issuers of instruments in which a Fund invests may also obtain financing at floating rates. Derivative instruments utilized by a Fund and/or issuers of instruments in which a Fund may invest may also reference floating rates. A Fund also may utilize leverage or borrowings primarily based on floating rates. Some instruments in which a Fund has invested are or were tied to forms of the London Interbank Offered Rate (“LIBOR”). LIBOR was the basic rate of interest used in lending transactions between banks on the London interbank market and has been widely used as a reference for setting the interest rate on loans globally. As a result of benchmark reforms, publication of most LIBOR settings has ceased. Some LIBOR settings continue to be published but only on a temporary, synthetic and non-representative basis. All such synthetic LIBOR settings are expected to be discontinued by September 30, 2024. When publication of applicable synthetic LIBOR settings ceases, any still outstanding instruments or investments using synthetic LIBOR settings are expected to transition to alternative floating rate benchmarks. Regulated entities have generally ceased entering into new LIBOR contracts in connection with regulatory requirements. As a result of legislative mechanisms and industry-wide efforts to replace LIBOR with alternative floating-rate benchmarks, LIBOR has been replaced with an alternative already in many instruments. The transition from LIBOR may have effects on the value, liquidity or return on certain Fund investments that continue to reference or previously referenced LIBOR. In addition, there may be costs associated with the transition from LIBOR. Any pricing adjustments to a Fund’s investments resulting from the transition to an alternative reference rate may also adversely affect the Fund’s performance and/or NAV. To the extent that any replacement rate differs from that utilized for a Structured Product that holds those securities, the Structured Product would experience an interest rate mismatch between its assets and liabilities. Some instruments that referenced LIBOR were transitioned to alternative reference rates as a result of certain legislative transition mechanisms such as the Adjustable Interest Rate (LIBOR) Act. This law provides a statutory fallback mechanism on a nationwide basis for certain contracts to replace LIBOR with a benchmark rate that is selected by the Board of Governors of the Federal Reserve System based on the Secured Overnight Financing Rate (“SOFR”) where the related contract contains no, or insufficient, fallback provisions. In addition, the transition from LIBOR to any alternative reference rate may also introduce operational risks in a Fund’s accounting, financial reporting, investment servicing, liability management and other aspects of the Fund’s business. Completion of the transition from LIBOR to alternative reference rates could lead to significant short-term and long-term uncertainty and market instability. It remains uncertain how such changes would affect a Fund, issuers of instruments in which a Fund invests and financial markets generally.
Angel Oak Mortgage-Backed Securities ETF | Large Shareholder Transactions Risk Member  
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Risk [Text Block] rr_RiskTextBlock Large Shareholder Transactions Risk. Shares of the Fund are offered to certain other investment companies, large retirement plans and other large investors. In addition, a third party investor, the Adviser or an affiliate of the Adviser, an AP, a market maker, or another entity may invest in the Fund and hold its investment for a limited period of time. As a result, the Fund is subject to the risk that those shareholders may purchase or redeem a large amount of shares of the Fund. To satisfy such large shareholder redemptions, the Fund may have to sell portfolio securities at times when it would not otherwise do so, which may negatively impact the Fund’s NAV and liquidity. In addition, large purchases of Fund shares could adversely affect the Fund’s performance to the extent that the Fund does not immediately invest cash it receives and therefore holds more cash than it ordinarily would. Large shareholder activity could also generate increased transaction costs and cause adverse tax consequences. In addition, transactions by large shareholders may account for a large percentage of the trading volume on the Exchange and may, therefore, have a material effect on the market price of the Shares.
Angel Oak Mortgage-Backed Securities ETF | Illiquid Investments Risks Member  
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Risk [Text Block] rr_RiskTextBlock Illiquid Investments Risks. The Fund may, at times, hold illiquid investments, by virtue of the absence of a readily available market for certain of its investments, or because of legal or contractual restrictions on sales. The Fund could lose money if it is unable to dispose of an investment at a time or price that is most beneficial to the Fund.
Angel Oak Mortgage-Backed Securities ETF | Regulatory And Legal Risks Member  
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Risk [Text Block] rr_RiskTextBlock Regulatory and Legal Risks. U.S. and non-U.S. government agencies and other regulators regularly adopt new regulations and legislatures enact new statutes that affect the investments held by the Fund, the strategies used by the Fund or the level of regulation or taxation that applies to the Fund. These statutes and regulations may impact the investment strategies, performance, costs and operations of the Fund or the taxation of its shareholders.
Angel Oak Mortgage-Backed Securities ETF | RIC-Related Risks Of Investments Generating Non-Cash Taxable Income Risk Member  
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Risk [Text Block] rr_RiskTextBlock RIC-Related Risks of Investments Generating Non-Cash Taxable Income. Certain of the Fund’s investments, particularly, debt obligations, such as zero coupon bonds, that will be treated as having “market discount” and/or original issue discount (“OID”) for U.S. federal income tax purposes and certain CLOs that may be considered passive foreign investment companies or controlled foreign corporations, will require the Fund to recognize taxable income in excess of the cash generated on those investments in that tax year, which could cause the Fund to have difficulty satisfying the annual distribution requirements applicable to regulated investment companies (“RICs”) and avoiding Fund-level U.S. federal income and/or excise taxes.
Angel Oak Mortgage-Backed Securities ETF | Risks Relating To Fund’s RIC Status Member  
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Risk [Text Block] rr_RiskTextBlock Risks Relating to Fund’s RIC Status. To qualify and remain eligible for the special tax treatment accorded to a RIC and its shareholders under the Internal Revenue Code of 1986, as amended, the Fund must meet certain source-of-income, asset diversification and annual distribution requirements. If the Fund fails to qualify as a RIC for any reason and becomes subject to corporate tax, the resulting corporate taxes could substantially reduce its net assets, the amount of income available for distribution and the amount of its distributions.
Angel Oak Mortgage-Backed Securities ETF | Uncertain Tax Treatment Risk Member  
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Risk [Text Block] rr_RiskTextBlock Uncertain Tax Treatment. Below investment grade instruments may present special tax issues for the Fund. U.S. federal income tax rules are not entirely clear about issues such as when the Fund may cease accruing interest, OID or market discount, when and to what extent deductions may be taken for bad debts or worthless instruments, how payments received on obligations in default should be allocated between principal and income and whether exchanges of debt obligations in a bankruptcy or workout context are taxable, which may make it difficult for the Fund to satisfy the annual distribution requirements applicable to RICs.
Angel Oak Mortgage-Backed Securities ETF | Sector Risk Member  
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Risk [Text Block] rr_RiskTextBlock Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.
Angel Oak Mortgage-Backed Securities ETF | Bank Subordinated Debt Risk Member  
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Risk [Text Block] rr_RiskTextBlock Bank Subordinated Debt Risks. Banks may issue subordinated debt securities, which have a lower priority to full payment behind other more senior debt securities. In addition to the risks generally associated with fixed income instruments (e.g., interest rate risk, counterparty risk, credit risk, etc.), bank subordinated debt is also subject to risks inherent to banks. Because banks are highly regulated and operate in a highly competitive environment, it may be difficult for a bank to meet its debt obligations. Banks also may be affected by changes in legislation and regulations applicable to the financial markets. Bank subordinated debt is often issued by smaller community banks that may be overly concentrated in a specific geographic region, lack the capacity to comply with new regulatory requirements or lack adequate capital.Subordinated debt and senior debt of banks and diversified financials companies are subject to the risks generally associated with the financials sector.
Angel Oak Mortgage-Backed Securities ETF | U.S. Government Securities Risks Member  
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Risk [Text Block] rr_RiskTextBlock U.S. Government Securities Risks. U.S. government securities are not guaranteed against price movement and may decrease in value. Some U.S. government securities are supported by the full faith and credit of the U.S. Treasury, while others may be supported only by the discretionary authority of the U.S. government to purchase certain obligations of a federal agency or U.S. government sponsored enterprise (“GSE”) or only by the right of the issuer to borrow from the U.S. Treasury. While the U.S. government provides financial support to such agencies and GSEs, no assurance can be given that the U.S. government will always do so. Other obligations are backed solely by the GSE’s own resources. Investments in securities issued by GSEs that are not backed by the U.S. Treasury are subject to higher credit risk than those that are backed by the U.S. Treasury.
Angel Oak Mortgage-Backed Securities ETF | Other Investment Companies Risks Member  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock Other Investment Companies Risks. The Fund will incur higher and duplicative expenses when it invests in exchange-traded funds (“ETFs”) and other investment companies, which may include those that are part of the same group of investment companies as the Fund (“affiliated underlying funds”). There is also the risk that the Fund may suffer losses due to the investment practices of the underlying funds. When the Fund invests in other investment companies, the Fund will be subject to substantially the same risks as those associated with the direct ownership of securities held by such investment companies. ETFs may be less liquid than other investments, and thus their share values more volatile than the values of the investments they hold. Investments in ETFs are also subject to the following risks: (i) the market price of an ETF’s shares may trade above or below their net asset value; (ii) an active trading market for an ETF’s shares may not develop or be maintained; and (iii) trading of an ETF’s shares may be halted for a number of reasons.
The Adviser may be subject to potential conflicts of interest in allocating the Fund’s assets to underlying funds, such as a potential conflict in selecting affiliated underlying funds over unaffiliated underlying funds. In addition, the Fund’s portfolio managers may be subject to potential conflicts of interest in allocating the Fund’s assets among underlying funds, as certain of the Fund’s portfolio managers may also manage an affiliated underlying fund in which the Fund may invest. Both the Adviser and the Fund’s portfolio managers have a fiduciary duty to the Fund to act in the Fund’s best interest when selecting underlying funds. Under the oversight of the Board of Trustees, the Adviser will carefully analyze any such potential conflicts of interest and will take steps to minimize and, where possible, eliminate them.
Angel Oak Mortgage-Backed Securities ETF | Derivatives Risks Member  
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Risk [Text Block] rr_RiskTextBlock Derivatives Risks. The Fund’s derivatives and other similar instruments (collectively referred to in this section as “derivatives” or “derivative instruments”) have risks, including the imperfect correlation between the value of such instruments and the underlying assets, rate or index; the loss of principal, including the potential loss of amounts greater than the initial amount invested in the derivative instrument; the possible default of the other party to the transaction; and illiquidity of the derivative investments. Changes in the value of a derivative may also create margin delivery or settlement payment obligations for the Fund. If a counterparty becomes bankrupt or otherwise fails to perform its obligations under a derivative contract due to financial difficulties, the Fund may experience significant delays in obtaining any recovery under the derivative contract in a bankruptcy or other reorganization proceeding. Certain derivatives may give rise to a form of leverage. Leverage magnifies the potential for gain and the risk of loss. The use of derivatives is also subject to operational risk which refers to risk related to potential operational issues, including documentation issues, settlement issues, system failures, inadequate controls, and human error, as well as legal risk which refers to the risk of loss resulting from insufficient documentation, insufficient capacity or authority of counterparty, or legality or enforceability of a contract. Derivatives are also subject to market risk which refers to the risk that markets could experience a change in volatility that adversely impacts fund returns and the fund’s obligations and exposures. Certain of the Fund’s transactions in derivatives could also affect the amount, timing and character of distributions to shareholders, which may result in the Fund realizing more short-term capital gain and ordinary income subject to tax at ordinary income tax rates than it would if it did not engage in such transactions, which may adversely impact the Fund’s after-tax returns.
The derivative instruments and techniques that the Fund may principally use include:
◦Futures. A futures contract is a standardized agreement to buy or sell a specific quantity of an underlying instrument at a specific price at a specific future time. A decision as to whether, when and how to use futures involves the exercise of skill and judgment and even a well-conceived futures transaction may be unsuccessful because of market behavior or unexpected events. In addition to the derivatives risks discussed above, the prices of futures can be highly volatile, using futures can lower total return, and the potential loss from futures can exceed the Fund’s initial investment in such contracts.
◦Options. If the Fund buys an option, it buys a legal contract giving it the right to buy or sell a specific amount of the underlying instrument or futures contract on the underlying instrument at an agreed-upon price typically in exchange for a premium paid by the Fund. If the Fund sells an option, it sells to another person the right to buy from or sell to the Fund a specific amount of the underlying instrument or futures contract on the underlying instrument at an agreed-upon price typically in exchange for a premium received by the Fund. A decision as to whether, when and how to use options involves the exercise of skill and judgment and even a well-conceived option transaction may be unsuccessful because of market behavior or unexpected events. The prices of options can be highly volatile and the use of options can lower total returns.
◦Swaps. A swap contract is an agreement between two parties pursuant to which the parties exchange payments at specified dates on the basis of a specified notional amount, with the payments calculated by reference to specified
securities, indexes, reference rates, currencies or other instruments. Swap agreements are particularly subject to counterparty credit, liquidity, valuation, correlation, leverage, operational and legal risk. Swaps could result in losses if interest rate or foreign currency exchange rates or credit quality changes are not correctly anticipated by the Fund or if the reference index, security or investments do not perform as expected. The use of credit default swaps can result in losses if the Fund’s assumptions regarding the creditworthiness of the underlying obligation prove to be incorrect.
Angel Oak Mortgage-Backed Securities ETF | Foreign Securities Risks Member  
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Risk [Text Block] rr_RiskTextBlock Foreign Securities Risks. Investments in securities or other instruments of non-U.S. issuers involve certain risks not involved in domestic investments and may experience more rapid and extreme changes in value than investments in securities of U.S. companies. Financial markets in foreign countries often are not as developed, efficient or liquid as financial markets in the United States, and therefore, the prices of non-U.S. securities and instruments can be more volatile. In addition, the Fund will be subject to risks associated with adverse political and economic developments in foreign countries, which may include the imposition of economic sanctions or other similar measures. Generally, there is less readily available and reliable information about non-U.S. issuers due to less rigorous disclosure or accounting standards and regulatory practices.
Angel Oak Mortgage-Backed Securities ETF | Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses, and taxes)  
Prospectus [Line Items] rr_ProspectusLineItems  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, and taxes)
Label rr_AverageAnnualReturnLabel Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses, and taxes)
1 Year rr_AverageAnnualReturnYear01 5.53%
Since Inception rr_AverageAnnualReturnSinceInception (3.03%)
Inception Date rr_AverageAnnualReturnInceptionDate Jun. 04, 2021
Angel Oak Mortgage-Backed Securities ETF | Angel Oak Mortgage-Backed Securities ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol MBS
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.79%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.79% [3]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.30%) [4]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.49%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 50
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 222
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 409
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 950
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 5.46%
Since Inception rr_AverageAnnualReturnSinceInception (3.01%)
Inception Date rr_AverageAnnualReturnInceptionDate Jun. 04, 2021
Angel Oak Mortgage-Backed Securities ETF | Angel Oak Mortgage-Backed Securities ETF | After Taxes on Distributions  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions1 [5]
1 Year rr_AverageAnnualReturnYear01 3.55% [5]
Since Inception rr_AverageAnnualReturnSinceInception (4.24%) [5]
Angel Oak Mortgage-Backed Securities ETF | Angel Oak Mortgage-Backed Securities ETF | After Taxes on Distributions and Sales  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares1 [5]
1 Year rr_AverageAnnualReturnYear01 3.19% [5]
Since Inception rr_AverageAnnualReturnSinceInception (2.79%) [5]
[1] Restated to reflect the unitary fee structure of the Fund. Angel Oak Capital Advisors, LLC (the “Adviser”) is responsible for substantially all the expenses of the Fund (including expenses of the Trust relating to the Fund), except for the advisory fees, payments under the Fund’s 12b-1 plan (if any), interest expenses, dividend and interest expenses related to short sales, taxes, acquired fund fees and expenses (“AFFE”) (other than fees for funds advised by the Adviser), brokers’ commissions and any other transaction related expenses and fees arising out of transactions effected on behalf of the Fund, litigation and potential litigation and other extraordinary expenses not incurred in the ordinary course of the Fund’s business.
[2] After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. In certain cases, the figure representing “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
[3] Restated to reflect the unitary fee structure of the Fund. Angel Oak Capital Advisors, LLC (the “Adviser”) is responsible for substantially all the expenses of the Fund (including expenses of the Trust relating to the Fund), except for the advisory fees, payments under the Fund’s 12b-1 plan (if any), interest expenses, dividend and interest expenses related to short sales, taxes, acquired fund fees and expenses (“AFFE”) (other than fees for funds advised by the Adviser), brokers’ commissions and any other transaction related expenses and fees arising out of transactions effected on behalf of the Fund, litigation and potential litigation and other extraordinary expenses not incurred in the ordinary course of the Fund’s business.
[4] The Adviser has contractually agreed to waive its fees and/or reimburse certain expenses (exclusive of interest expenses, dividend and interest expenses related to short sales, taxes, acquired fund fees and expenses (other than fees for funds advised by the Adviser which are waived), brokers’ commissions and any other transaction related expenses and fees arising out of transactions effected on behalf of the Fund, and litigation and potential litigation and other extraordinary expenses not incurred in the ordinary course of the Fund’s business) to limit the Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement to 0.49% of the Fund’s average daily net assets (the “Expense Limit”) through September 30, 2025. The contractual arrangement may only be changed or eliminated by the Board of Trustees upon 60 days’ written notice to the Adviser. The Adviser may recoup from the Fund any waived amount or reimbursed expenses pursuant to this agreement if such recoupment does not cause the Fund’s Total Annual Fund Operating Expenses after such recoupment to exceed the lesser of (i) the Expense Limit in effect at the time of the waiver or reimbursement and (ii) the Expense Limit in effect at the time of recoupment and the recoupment is made within three years after the end of the month in which the Adviser incurred the expense.
[5] After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. In certain cases, the figure representing “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.