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 Fund shares are held in a taxable account. These costs, which are not reflected in total annual Fund operating expenses or in the example, affect the Fund’s performance. Because the Fund has not commenced investment operations as of the date of this prospectus, it does not have portfolio turnover information to report.

Acquired Fund Fees and Expenses, Based on Estimates [Text]

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AFFE are indirect fees and expenses that the Fund incurs from investing in shares of other mutual funds, including money market funds and exchange-traded funds, and are estimated for the current fiscal year.

Expense Example Narrative [Text Block]

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This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem 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 (including capped expenses for the period described in the footnote to the fee table) remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

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The Fund seeks to achieve its investment objective primarily by investing in other mutual funds for which the Adviser also serves as investment adviser (“LGIMA Underlying Funds”), with a target asset allocation strategy that emphasizes investments in equity securities (and certain other instruments described below) in an amount equal to 60% of its assets and exposure to fixed-income securities in an amount equal to 40% of its assets. The Fund’s equity component will also utilize an option collar strategy to attempt to mitigate losses in downward market cycles, as described in greater detail below.

The Fund’s target asset allocation may differ from the Fund’s actual asset allocation. These allocations will be reviewed periodically throughout the year to ensure any significant changes to the Adviser’s market outlook are incorporated into the asset allocation. For example, the Adviser may seek to increase allocations to the equity asset class if the Adviser determines that such change will help achieve the Fund’s return target in any given year, provided the Adviser believes that any additional portfolio risk from such increased allocation is appropriate and in line with the Adviser’s then-current market assumptions, including estimates of expected market volatility and correlation across underlying assets. On the other hand, the Adviser may seek to increase allocations to the U.S. fixed income asset class to, for example, attempt to decrease volatility and preserve capital.

With respect to its equity investments, the Fund will invest primarily in the Legal & General Global Developed Equity Index Fund (the “Index Fund”) to passively track exposure to the securities included in the MSCI World Index, the Index Fund’s primary benchmark index. Through its investments in the Index Fund, the Fund may gain exposure to equity securities, equity exchange-traded funds (“ETFs”), equity futures and/or equity swaps, including total return swaps. The Fund expects to gain exposure to derivatives that are primarily entered into on U.S. exchanges but may also be exposed to derivative transactions conducted outside of the U.S. In addition to its investments in the Index Fund, the Fund may also invest directly in ETFs and options for liquidity management purposes.

The Fund will also utilize an option collar strategy as an overlay to the entirety of the Fund’s equity allocation. The Adviser expects that the option collar strategy will be utilized continuously in connection with its equity allocation. The purpose of the Fund’s option collar strategy is to “hedge” or mitigate the risk of losses in downward market cycles associated with owning equity securities. This strategy will involve (i) selling covered call options on equity securities held indirectly by the Fund to generate premium from such options, while (ii) simultaneously purchasing put options on the same underlying equity securities held indirectly by the Fund. The optimal reference holdings for the option collar strategy are identified by utilizing references that are assigned the same exposure (i.e. by region and market capitalization) as the exposure held through the Index Fund, with consideration given to the liquidity of such related instruments. In other words, the Fund will use references for the option collar strategy that directly align with the Fund’s exposure held through the Index Fund. The Fund may also invest in total return swaps to gain the same or similar investment exposure as the option collar strategy.

With respect to its fixed income investments, the Fund will invest primarily in the Legal & General Long Duration U.S. Credit Fund (the “U.S. Credit Fund”) to provide overall diversification for the Fund’s portfolio. Through its investments in the U.S. Credit Fund, the Fund may gain exposure to fixed income securities such as securities issued or guaranteed by the U.S. Government and its agencies or instrumentalities, municipal bonds, corporate bonds, supranational issuers (including emerging market issuers), asset-backed securities and mortgage-backed securities. In constructing the fixed income component of the Fund’s portfolio through exposure to the U.S. Credit Fund, the Adviser’s fixed income research analysts perform in-depth fundamental analysis and emphasize the following areas of focus in the research process: developing proprietary earnings models, forecasting free cash flow, analyzing asset valuations, and meeting with management. The Fund generally does not expect to hold any fixed income securities directly as part of its principal investment strategies.

Risk Narrative [Text Block]

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As with all mutual funds, there is no guarantee that the Fund will achieve its investment objective. You could lose money by investing in the Fund. A Fund share is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or any other government agency. Each risk summarized below is considered a “principal risk” of investing in the Fund, regardless of the order in which it appears. Different risks may be more significant at different times depending on market conditions or other factors.

Asset Allocation Risk — The Fund is subject to asset allocation risk, which is the risk that the selection of the Underlying Funds and the allocation of the Fund’s assets among the various asset classes and market segments will cause the Fund to underperform other funds with a similar investment objective. The value of an investment in the Fund is based primarily on the prices of the Underlying Funds in which the Fund invests. In turn, the price of each Underlying Fund is based on the value of its assets. The ability of the Fund to meet its investment objective is directly related to its asset allocation among the Underlying Funds and its direct investments and the ability of the Underlying Funds to meet their investment objectives and for the direct investments to perform positively. If the Adviser’s asset allocation strategy does not work as intended, the Fund may not achieve its objective.

Investment in Underlying Funds Risk — The value of an investment in the Fund is based primarily on the prices of the Underlying Funds in which the Fund invests. In turn, the price of each Underlying Fund is based on the value of its assets. The Fund, and thus its shareholders, bears its own direct expenses in addition to bearing a proportionate share of expenses of the Underlying Funds, which may make owning shares of the Fund more costly than owning shares of the Underlying Funds directly. Before investing in the Fund, investors should assess the risks associated with the Underlying Funds and the types of investments made by those Underlying Funds. These risks include any combination of the risks described below, although the Fund’s exposure to a particular risk will be proportionate to the Fund’s overall asset allocation and Underlying Fund allocation.

Market Risk — The prices of and the income generated by the Fund’s securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and currency and interest rate fluctuations. In addition, the impact of any epidemic, pandemic or natural disaster, or widespread fear that such events may occur, could negatively affect the global economy, as well as the economies of individual countries, the financial performance of individual companies and sectors, and the markets in general in significant and unforeseen ways.

Equity Market Risk — The risk that stock prices will fall over short or extended periods of time, sometimes rapidly and unpredictably. The value of equity securities will fluctuate in response to factors affecting a particular company, as well as broader market and economic conditions. Broad movements in financial markets may adversely affect the price of the Fund’s investments, regardless of how well the companies in which the Fund invests perform. Moreover, in the event of a company’s bankruptcy, claims of certain creditors, including bondholders, will have priority over claims of common stock holders such as the Fund.

Fixed Income Market Risk — The prices of the Fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. Generally, the Fund’s fixed income securities will decrease in value if interest rates rise and vice versa. In a low interest rate environment, risks associated with rising rates are heightened. Declines in dealer market-making capacity as a result of structural or regulatory changes could decrease liquidity and/or increase volatility in the fixed income markets.

Derivatives Risk — Futures contracts, options and swaps are subject to market risk, leverage risk, correlation risk and liquidity risk. Liquidity risk and market risk are described elsewhere in this section. Many over-the-counter (“OTC”) derivative instruments will not have liquidity beyond the counterparty to the instrument. Leverage risk is the risk that a small percentage of assets invested in derivatives can have a disproportionately larger impact on the Fund’s performance. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. Forward contracts and swap agreements are also subject to counterparty credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or may be valued incorrectly. Counterparty credit risk is described elsewhere in this section. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Some derivatives have the potential for unlimited loss, regardless of the size of an initial investment. The other parties to certain derivative contracts present the same types of credit risk as issuers of fixed income securities. The use of derivatives may also increase the amount of taxes payable by shareholders. Both U.S. and non-U.S. regulators have adopted and are in the process of adopting and implementing regulations governing derivatives markets, the ultimate impact of which remains unclear.

Collared Options Strategy Risk — Writing and buying options are speculative activities and entail greater than ordinary investment risks. The Fund’s use of call and put options can lead to losses because of adverse movements in the price or value of the reference asset, which may be magnified by certain features of the options. When selling a call option, the Fund will receive a premium; however, this premium may not be enough to offset a loss incurred by the Fund if the price of the reference asset is above the strike price by an amount equal to or greater than the premium. The value of an option may be adversely affected if the market for the option becomes less liquid or smaller, and will be affected by changes in the value or yield of the option’s reference asset, an increase in interest rates, a change in the actual or perceived volatility of the stock market or the reference asset and the remaining time to expiration. Additionally, the value of an option does not increase or decrease at the same rate as the reference asset.

Counterparty Credit Risk – The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with direct transactions in portfolio securities. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its unsettled or open contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease. In addition, the Fund currently intends to engage in such investment transactions with a single counterparty, which increases the Fund’s exposure to counterparty credit risk. The counterparties with which the Fund may transact generally are major, global financial institutions. The Fund bears the risk that those counterparties may be adversely affected by legislative or regulatory changes, adverse market conditions, increased competition, and/or wide scale credit losses resulting from financial difficulties or borrowers affecting the financial services sector.

Futures Contracts Risk — Futures contracts, or “futures,” provide for the future sale by one party and purchase by another party of a specified amount of a specific security or asset at a specified future time and at a specified price (with or without delivery required). Because futures require only a small initial investment in the form of a deposit or margin, they involve a high degree of leverage. Accordingly, the fluctuation of the value of futures in relation to the underlying assets upon which they are based is magnified. Thus, the Fund may experience losses that exceed losses experienced by funds that do not use futures contracts and which may be unlimited, depending on the structure of the contract.

Swap Agreements Risk — Swaps are agreements whereby two parties agree to exchange payment streams calculated by reference to an underlying asset, such as a rate, index, instrument or securities. Total return swaps give the Fund the right to receive the appreciation in the value of a specified security, index or other instrument in return for a fee paid to the counterparty, which will typically be an agreed upon interest rate. If the underlying asset in a total return swap declines in value over the term of the swap, the Fund may also be required to pay the dollar value of that decline to the counterparty.

Large Capitalization Companies Risk — The risk that larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rates of successful smaller companies.

Mid-Capitalization Companies Risk — The risk that mid-capitalization companies in which the Fund may invest may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, mid-capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, mid-capitalization stocks may be more volatile than those of larger companies. Mid- capitalization stocks may be traded over-the-counter or listed on an exchange.

Corporate Fixed Income Securities Risk — Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers.

Interest Rate Risk — The risk that a rise in interest rates will cause a fall in the value of fixed income securities, including U.S. Government securities, in which the Fund invests. Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. A low interest rate environment may present greater interest rate risk because there may be a greater likelihood of rates increasing and rates may increase more rapidly.

Liquidity Risk — The risk that certain securities may be difficult or impossible to sell at the time and price that the Fund would like. The Fund may have to lower the price of the security, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance.

Active Management Risk – The Fund is subject to the risk that the Adviser’s judgments about the attractiveness, value, or potential appreciation of the Fund’s investments may prove to be incorrect. If the investments selected and strategies employed by the Fund fail to produce the intended results, the Fund could underperform in comparison to other funds with similar objectives and investment strategies.

Valuation Risk — The risk that a security may be difficult to value. The Fund may value certain securities at a price higher than the price at which they can be sold.

Supranational Entities Risk — Government members, or “stockholders,” usually make initial capital contributions to a supranational entity and in many cases are committed to make additional capital contributions if the supranational entity is unable to repay its borrowings. There is no guarantee, however, that one or more stockholders of the supranational entity will continue to make any necessary additional capital contributions. If such contributions are not made, the entity may be unable to pay interest or repay principal on its debt securities, and the Fund may lose money on such investments.

U.S. Government Securities Risk — Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency’s own resources.

Municipal Securities Risk — Municipal securities, like other fixed income securities, rise and fall in value in response to economic and market factors, primarily changes in interest rates, and actual or perceived credit quality. Rising interest rates will generally cause municipal securities to decline in value. Longer-term securities respond more sharply to interest rate changes than do shorter-term securities. A municipal security will also lose value if, due to rating downgrades or other factors, there are concerns about the issuer’s current or future ability to make principal or interest payments. State and local governments rely on taxes and, to some extent, revenues from private projects financed by municipal securities, to pay interest and principal on municipal debt. Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations. Actual or perceived erosion of the creditworthiness of municipal issuers may reduce the value of the Fund’s holdings. As a result, the Fund will be more susceptible to factors that adversely affect issuers of municipal obligations than a mutual fund that does not have as great a concentration in municipal obligations.

Duration Risk — The longer-term securities in which the Fund may invest tend to be more volatile than shorter-term securities. A portfolio with a longer average portfolio duration is more sensitive to changes in interest rates than a portfolio with a shorter average portfolio duration.

Indexing Strategy/Index Tracking Risk — Certain Underlying Funds are managed with an indexing investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the underlying index (“Underlying Index”) or of the actual securities comprising the Underlying Index. This differs from an actively-managed fund, which typically seeks to outperform a benchmark index. As a result of its investment in such Underlying Funds, the Fund’s performance may be less favorable than that of a portfolio managed using a fully active investment strategy. The structure and composition of the Underlying Index will affect the performance, volatility, and risk of the Underlying Index and, consequently, the performance, volatility, and risk of the Fund. The performance of the portion of the Fund’s portfolio invested in such an Underlying Fund may not match the performance of the Underlying Fund’s Underlying Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities. In addition, the Fund may not be fully invested at times, generally as a result of cash flows into or out of the Fund or reserves of cash held by the Fund to meet redemptions.

Foreign Investment Risk –Investing in issuers located in foreign countries poses distinct risks because political and economic events unique to a country or region will affect those markets and their issuers. These events will not necessarily affect the U.S. economy or similar issuers located in the United States. In addition, investments in foreign countries are generally denominated in a foreign currency. As a result, changes in the value of those currencies compared to the U.S. dollar may affect (positively or negatively) the value of the Fund’s investments. These currency movements may happen separately from and in response to events that do not otherwise affect the value of the security in the issuer’s home country. Additionally, periodic U.S. Government restrictions on investments in issuers from certain foreign countries may result in the Fund having to sell such prohibited securities at inopportune times. Such prohibited securities may have less liquidity as a result of such U.S. Government designation and the market price of such prohibited securities may decline, which may cause the Fund to incur losses.

Asset-Backed Securities Risk — Asset-backed securities are securities backed by non-mortgage assets such as company receivables, truck and auto loans, leases and credit card receivables. Asset-backed securities may be issued as pass-through certificates, which represent undivided fractional ownership interests in the underlying pools of assets. Therefore, repayment depends largely on the cash flows generated by the assets backing the securities. Asset-backed securities entail prepayment risk, which may vary depending on the type of asset, but is generally less than the prepayment risk associated with mortgage-backed securities. Asset-backed securities present credit risks that are not presented by mortgage-backed securities because asset-backed securities generally do not have the benefit of a security interest in collateral that is comparable in quality to mortgage assets. If the issuer of an asset-backed security defaults on its payment obligations, there is the possibility that, in some cases, the Fund will be unable to possess and sell the underlying collateral and that the Fund’s recoveries on repossessed collateral may not be available to support payments on the security. In the event of a default, the Fund may suffer a loss if it cannot sell collateral quickly and receive the amount it is owed.

Mortgage-Backed Securities Risk — Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations.

Prepayment Risk — The risk that, in a declining interest rate environment, 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.

Extension Risk — The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security’s value.

ETFs Risk – ETFs are pooled investment vehicles, such as registered investment companies and grantor trusts, whose shares are listed and traded on U.S. and non-U.S. stock exchanges or otherwise traded in the over-the-counter market. To the extent that the Fund invests in ETFs, the Fund will be subject to substantially the same risks as those associated with the direct ownership of the securities in which the ETF invests, and the value of the Fund’s investment will fluctuate in response to the performance of the ETF’s holdings. ETFs typically incur fees that are separate from those of the Fund. Accordingly, the Fund’s investments in ETFs will result in the layering of expenses such that shareholders will indirectly bear a proportionate share of the ETFs’ operating expenses, in addition to paying Fund expenses.

New Fund Risk — Because the Fund and the LGIMA Underlying Funds are new, investors in the Fund bear the risk that the Fund and the LGIMA Underlying Funds in which the Fund invests may not be successful in implementing their investment strategies, may not employ successful investment strategies, or may fail to attract sufficient assets under management to realize economies of scale, any of which could result in the Fund being liquidated at any time without shareholder approval and at a time that may not be favorable for all shareholders. Such liquidation could have negative tax consequences for shareholders and will cause shareholders to incur expenses of liquidation.

Risk Not Insured Depository Institution [Text]

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A Fund share is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or any other government agency.

Performance Narrative [Text Block]

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The Fund is new, and, therefore, has no performance history. Once the Fund has completed a full calendar year of operations, a bar chart and table will be included that will provide some indication of the risks of investing in the Fund by showing the variability of the Fund’s returns and comparing the Fund’s performance to a broad measure of market performance. Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Current performance information is available on the Fund’s website at www.lgima.com/funds or by calling toll-free to 833-44-LGIMA.

Performance One Year or Less [Text]

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The Fund is new, and, therefore, has no performance history.

Performance Availability Website Address [Text]

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www.lgima.com/funds