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Investor Class Prospectus | Matthews Emerging Markets Equity Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Matthews Emerging Markets Equity Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
Long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of this Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL 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 April 30, 2023
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 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 annual fund operating expenses or in the example of fund expenses, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 88% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 88.00%
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates “Other Expenses” are based on estimated amounts for the current fiscal year and calculated as a percentage of the Fund’s assets.
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE OF FUND EXPENSES
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
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 remain the same. The example reflects the fee waiver for the one year period only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategy
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal circumstances, the Matthews Emerging Markets Equity Fund seeks to achieve its investment objective by investing at least 80% of its net assets, which include borrowings for investment purposes, in the common and preferred stocks of companies located in emerging market countries. Emerging market countries generally include every country in the world except the United States, Australia, Canada, Hong Kong, Israel, Japan, New Zealand, Singapore and most of the countries in Western Europe. Certain emerging market countries may also be classified as “frontier” market countries, which are a subset of emerging market countries with newer or even less developed economies and markets, such as Sri Lanka and Vietnam. The list of emerging market countries and frontier market countries may change from time to time. The Fund may also invest in companies located in developed countries; however, the Fund may not invest in any company located in a developed country if, at the time of purchase, more than 20% of the Fund’s assets are invested in developed market companies. The Fund has concentrated its investments (meaning more than 25% of its assets) from time to time in a single country, including China.
A company or other issuer is considered to be “located” in a country or a region, and a security or instrument is deemed to be an emerging market (or specific country) security or instrument, if it has substantial ties to that country or region. Matthews currently makes that determination based primarily on one or more of the following criteria: (A) with respect to a company or issuer, whether (i) it is organized under the laws of that country or any country in that region; (ii) it derives at least 50% of its revenues or profits from goods produced or sold, investments made, or services performed, or has at least 50% of its assets located, within that country or region; (iii) it has the primary trading markets for its securities in that country or region; (iv) it has its principal place of business in or is otherwise headquartered in that country or region; or (v) it is a governmental entity or an agency, instrumentality or a political subdivision of that country or any country in that region; and (B) with respect to an instrument or issue, whether (i) its issuer is headquartered or organized in that country or region; (ii) it is issued to finance a project with significant assets or operations in that country or region; (iii) it is principally secured or backed by assets located in that country or region; (iv) it is a component of or its issuer is included in a recognized securities index for the country or region; or (v) it is denominated in the currency of an emerging market country and addresses at least one of the other above criteria. The term “located” and the associated criteria listed above have been defined in such a way that Matthews has latitude in determining whether an issuer should be included within a region or country. The Fund may also invest in depositary receipts that are treated as emerging markets investments, including American, European and Global Depositary Receipts.
The Fund seeks to invest in companies capable of sustainable growth based on the fundamental characteristics of those companies, including balance sheet information; number of employees; size and stability of cash flow; management’s depth, adaptability and integrity; product lines; marketing strategies; corporate governance; and financial health. Matthews expects that the companies in which the Fund invests typically will be of medium or large size, but the Fund may invest in companies of any size. Matthews measures a 
company’s size with respect to fundamental criteria such as, but not limited to, market capitalization, book value, revenues, profits, cash flow, dividends paid and number of employees. The implementation of the principal investment strategies of the Fund may result in a significant portion of the Fund’s assets being invested from time to time in one or more sectors, but the Fund may invest in companies in any sector. 
Risk [Heading] rr_RiskHeading Principal Risks of Investment  
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no guarantee that your investment in the Fund will increase in value. The value of your investment in the Fund could go down, meaning you could lose money. The principal risks of investing in the Fund are: 
Foreign Investing Risk: Investments in foreign securities may involve greater risks than investing in U.S. securities. As compared to U.S. companies, foreign issuers generally disclose less financial and other information publicly and are subject to less stringent and less uniform accounting, auditing and financial reporting standards. Foreign countries typically impose less thorough regulations on brokers, dealers, stock exchanges, corporate insiders and listed companies than does the U.S., and foreign securities markets may be less liquid and more volatile than U.S. markets. Investments in foreign securities generally involve higher costs than investments in U.S. securities, including higher transaction and custody costs as well as additional taxes imposed by foreign governments. In addition, security trading practices abroad may offer less protection to investors such as the Fund. Political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the U.S. and/or other governments are other potential risks that could impact an investment in a foreign security. Settlement of transactions in some foreign markets may be delayed or may be less frequent than in the U.S., which could affect the liquidity of the Fund’s portfolio. 
Public Health Emergency Risks: Pandemics and other public health emergencies, including outbreaks of infectious diseases such as the current outbreak of the novel coronavirus (“COVID‑19”), can result, and in the case of COVID‑19 has resulted and may continue to result in market volatility and disruption, and materially and adversely impact economic conditions in ways that cannot be predicted, all of which could result in substantial investment losses. Containment efforts and related restrictive actions by governments and businesses have significantly diminished and disrupted global economic activity across many industries. Less developed countries and their health systems may be more vulnerable to these impacts. The ultimate impact of COVID‑19, including new strains of the underlying virus, or other health emergencies on global economic conditions and businesses is impossible to predict accurately. Ongoing and potential additional material adverse economic effects of indeterminate duration and severity are possible. The resulting adverse impact on the value of an investment in the Fund could be significant and prolonged. Other public health emergencies that may arise in the future could have similar or other unforeseen effects. 
Currency Risk: When the Fund conducts securities transactions in a foreign currency, there is the risk of the value of the foreign currency increasing or decreasing against the value of the U.S. dollar. The value of an investment denominated in a foreign currency will decline in U.S. dollar terms if that currency weakens against the U.S. dollar. While the Fund is 
permitted to hedge currency risks, Matthews does not anticipate doing so at this time. Additionally, emerging market countries may utilize formal or informal currency-exchange controls or “capital controls.” Capital controls may impose restrictions on the Fund’s ability to repatriate investments or income. Such controls may also affect the value of the Fund’s holdings. 
Risks Associated with Emerging and Frontier Markets: Emerging and frontier markets are often less stable politically and economically than developed markets such as the U.S., and investing in these markets involves different and greater risks. There may be less publicly available information about companies in many emerging market countries, and the stock exchanges and brokerage industries in many emerging market countries typically do not have the level of government oversight as do those in the U.S. Securities markets of many emerging market countries are also substantially smaller, less liquid and more volatile than securities markets in the U.S. Frontier markets, a subset of emerging markets, generally have smaller economies and even less mature capital markets than emerging markets. As a result, the risks of investing in emerging market countries are magnified in frontier market countries. Frontier markets are more susceptible to having abrupt changes in currency values, less mature markets and settlement practices, and lower trading volumes, which could lead to greater price volatility and illiquidity. 
Political, Social and Economic Risks of Investing in Asia: The value of the Fund’s assets may be adversely affected by political, economic, social and religious instability; inadequate investor protection; changes in laws or regulations of countries within the Asian region (including countries in which the Fund invests, as well as the broader region); international relations with other nations; natural disasters; corruption and military activity. The economies of many Asian countries differ from the economies of more developed countries in many respects, such as rate of growth, inflation, capital reinvestment, resource self-sufficiency, financial system stability, the national balance of payments position and sensitivity to changes in global trade. 
Growth Stock Risk: Growth stocks may be more volatile than other stocks because they are more sensitive to investor perceptions of the issuing company’s growth potential. Growth stocks may go in and out of favor over time and may perform differently than the market as a whole. 
Depositary Receipts Risk: Although depositary receipts have risks similar to the securities that they represent, they may also involve higher expenses and may trade at a discount (or premium) to the underlying security. In addition, depositary receipts may not pass through voting and other shareholder rights, and may be less liquid than the underlying securities listed on an exchange. 
Volatility Risk: The smaller size and lower levels of liquidity in emerging markets, as well as other factors, may result in changes in the prices of emerging market securities that are more volatile than those of companies in more developed regions. This volatility can cause the price of the Fund’s shares to go up or down dramatically. Because of this volatility, this Fund is better suited for long-term investors (typically five years or longer). 
Risks Associated with Medium‑Size Companies: Medium‑size companies may be subject to a number of risks 
not associated with larger, more established companies, potentially making their stock prices more volatile and increasing the risk of loss. 
Country Concentration Risk: The Fund may invest a significant portion of its total net assets in the securities of issuers located in a single country. An investment in the Fund therefore may entail greater risk than an investment in a fund that does not concentrate its investments in a single or small number of countries because these securities may be more sensitive to adverse social, political, economic or regulatory developments affecting that country or countries. As a result, events affecting a single or small number of countries may have a significant and potentially adverse impact on the Fund’s investments, and the Fund’s performance may be more volatile than that of funds that invest globally. The Fund has concentrated or may concentrate its investments in China. 
Risks Associated with China: The Chinese government exercises significant control over China’s economy through its industrial policies, monetary policy, management of currency exchange rates, and management of the payment of foreign currency-denominated obligations. Changes in these policies could adversely impact affected industries or companies in China. China’s economy, particularly its export-oriented industries, may be adversely impacted by trade or political disputes with China’s major trading partners, including the U.S. In addition, as its consumer class continues to grow, China’s domestically oriented industries may be especially sensitive to changes in government policy and investment cycles. 
Risks Associated with Europe: The economies of countries in Europe are in different stages of economic development and are often closely connected and interdependent, and events in one country in Europe can have an adverse impact on other European countries. Efforts by the member countries of the European Union (“EU”) to continue to unify their economic and monetary policies may increase the potential for similarities in the movements of European markets and reduce the potential investment benefits of diversification within the region. However , the substance of these policies may not address the needs of all European economies. European financial markets have in recent years experienced increased volatility due to concerns with some countries’ high levels of sovereign debt, budget deficits and unemployment. Markets have also been affected by the decision by the UK to withdraw from the EU (an event commonly known as “Brexit”). There is uncertainty surrounding the ultimate impact of Brexit on the UK, the EU and the broader global economy. An exit by any member countries from the EU or the Economic and Monetary Union of the EU, or even the prospect of such an exit, could lead to increased volatility in European markets and negatively affect investments both in issuers in the exiting country and throughout Europe. In addition, while many countries in western Europe are considered to have developed markets, many eastern European countries are less developed, and investments in eastern European countries, even if denominated in Euros, may involve special risks associated with investments in emerging markets. See “Risks Associated with Emerging and Frontier Markets” above. In addition, Russia’s recent military incursions in Ukraine have led to sanctions being levied against Russia by the United States, EU and other countries, which could adversely affect European and global energy and financial markets and thus could affect the value of a Fund’s investments. 
Risks Associated with Latin America: The economies of Latin American countries have in the past experienced considerable difficulties, including high inflation rates, high interest rates, high unemployment, government overspending and political instability. Similar conditions in the present or future could impact the Fund’s performance. Many Latin American countries are highly reliant on the exportation of commodities and their economies may be significantly impacted by fluctuations in commodity prices and the global demand for certain commodities. Investments in Latin American countries may be subject to currency risks, such as restrictions on the flow of money in and out of a country, extreme volatility relative to the U.S. dollar, and devaluation, all of which could decrease the value of the Fund’s investments. Other Latin American investment risks may include inadequate investor protection, less developed regulatory, accounting, auditing and financial standards, unfavorable changes in laws or regulations, natural disasters, corruption and military activity. The governments of many Latin American countries may also exercise substantial influence over many aspects of the private sector, and any such exercise could have a significant effect on companies in which the Fund invests. Securities of companies in Latin American countries may be subject to significant price volatility, which could impact Fund performance. 
Sector Concentration Risk: To the extent that the Fund emphasizes, from time to time, investments in a particular sector, the Fund will be subject to a greater degree to the risks particular to that sector, including the sector described below. 
Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single sector. By focusing its investments in a particular sector, the Fund may face more risks than if it were diversified broadly over numerous sectors. 
–   Information Technology Sector Risk: As of December 31, 2021, 27% of the Fund’s assets were invested in the information technology sector. Information technology companies may be significantly affected by aggressive pricing as a result of intense competition and by rapid product obsolescence due to rapid development of technological innovations and frequent new product introduction. Other factors, such as short product cycle, possible loss or impairment of intellectual property rights, and changes in government regulations, may also adversely impact information technology companies. 
Cybersecurity Risk: With the increased use of technologies such as the internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund’s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs. 
Risk Lose Money [Text] rr_RiskLoseMoney The value of your investment in the Fund could go down, meaning you could lose money.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Past Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart below shows the Fund’s performance over certain periods of time and how it has varied from year to year, reflective of the Fund’s volatility and some indication of risk. Also shown are the best and worst quarters for this time period. The table below shows the Fund’s performance over certain periods of time, along with performance of its benchmark index. The information presented below is past performance, before and after taxes, and is not a prediction of future results. Both the bar chart and performance table assume reinvestment of all dividends and distributions. For the Fund’s most recent month‑end performance, please visit matthewsasia.com or call 800.789.ASIA (2742).
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart below shows the Fund’s performance over certain periods of time and how it has varied from year to year, reflective of the Fund’s volatility and some indication of risk.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.789.ASIA (2742)
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress matthewsasia.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The information presented below is past performance, before and after taxes, and is not a prediction of future results.
Bar Chart [Heading] rr_BarChartHeading ANNUAL RETURN FOR YEARS ENDED 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock Best Quarter Q2 2021 7.69% Worst Quarter Q3 2021 -8.42%
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2021
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After‑tax returns are calculated using the highest historical 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 Actual after‑tax returns depend on an investor’s tax situation and may differ from those shown. 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.
Investor Class Prospectus | Matthews Emerging Markets Equity Fund | Investor Class Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Account Fee on Redemptions (for wire redemptions only) rr_MaximumAccountFee $ 9
Management Fees rr_ManagementFeesOverAssets 0.66%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Administration and Shareholder Servicing Fees rr_Component1OtherExpensesOverAssets 0.14%
Other Expenses rr_OtherExpensesOverAssets 0.86% [1]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.52%
Fee Waiver and Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.39%) [2]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement rr_NetExpensesOverAssets 1.13%
One year: rr_ExpenseExampleYear01 $ 115
Three years: rr_ExpenseExampleYear03 442
Five years: rr_ExpenseExampleYear05 792
Ten years: rr_ExpenseExampleYear10 $ 1,779
2021 rr_AnnualReturn2021 (0.60%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2021
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 7.69%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2021
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (8.42%)
1 year rr_AverageAnnualReturnYear01 (0.60%)
Since Inception rr_AverageAnnualReturnSinceInception 32.61%
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 30, 2020
Investor Class Prospectus | Matthews Emerging Markets Equity Fund | Return after taxes on distributions | Investor Class Shares  
Risk/Return: rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 (3.14%) [3]
Since Inception rr_AverageAnnualReturnSinceInception 29.91% [3]
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 30, 2020 [3]
Investor Class Prospectus | Matthews Emerging Markets Equity Fund | Return after taxes on distributions and sale of Fund shares | Investor Class Shares  
Risk/Return: rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 0.49% [3]
Since Inception rr_AverageAnnualReturnSinceInception 24.63% [3]
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 30, 2020 [3]
Investor Class Prospectus | Matthews Emerging Markets Equity Fund | MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 (2.22%)
Since Inception rr_AverageAnnualReturnSinceInception 21.82%
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 30, 2020
[1]
“Other Expenses” are based on estimated amounts for the current fiscal year and calculated as a percentage of the Fund’s assets.
[2]
Matthews has contractually agreed (i) to waive fees and reimburse expenses to the extent needed to limit Total Annual Fund Operating Expenses (excluding Rule 12b‑1 fees, taxes, interest, brokerage commissions, short sale dividend expenses, expenses incurred in connection with any merger or reorganization or extraordinary expenses such as litigation) of the Institutional Class (which is offered through a separate prospectus to eligible investors) to 0.90%, first by waiving class specific expenses (e.g., shareholder service fees specific to a particular class) of the Institutional Class and then, to the extent necessary, by waiving non‑class specific expenses (e.g., custody fees) of the Institutional Class, and (ii) if any Fund-wide expenses (i.e., expenses that apply to both the Institutional Class and the Investor Class) are waived for the Institutional Class to maintain the 0.90% expense limitation, to waive an equal amount (in annual percentage terms) of those same expenses for the Investor Class. The Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement for the Investor Class may vary from year to year and will in some years exceed 0.90%. If the operating expenses fall below the expense limitation within three years after Matthews has made a waiver or reimbursement, the Fund may reimburse Matthews up to an amount that does not cause the expenses for that year to exceed the lesser of (i) the expense limitation applicable at the time of that fee waiver and/or expense reimbursement or (ii) the expense limitation in effect at the time of recoupment. This agreement will remain in place until April 30, 2023 and may be terminated at any time by the Board of Trustees on behalf of the Fund on 60 days’ written notice to Matthews. Matthews may decline to renew this agreement by written notice to the Trust at least 30 days before its annual expiration date.
[3]
After‑tax returns are calculated using the highest historical 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. 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.