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Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading MATTHEWS ASIA SCIENCE AND TECHNOLOGY 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)
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 transac-tion 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 46% of the average value of its portfolio.

Portfolio Turnover, Rate rr_PortfolioTurnoverRate 46.00%
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates "Other Expenses" for the Institutional Class are estimated based on the Other Expenses for the Investor Class.
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. 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 market conditions, the Matthews Asia Science and Technology 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 Asia that derive more than 50% of their revenues from the sale of products or services in science- and technology-related industries and services. Asia consists of all countries and markets in Asia, including developed, emerging, and frontier countries and markets in the Asian region. A company is considered to be “located” in a country or a region if it has substantial ties to that country or region, including for example, if it (i) is organized under the laws of that country or any country in that region; (ii) 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) has the primary trading markets for its securities in that country or region; or (iv) is a governmental entity or an agency, instrumentality or a political subdivision of that country or any country in that region. 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 Fund concentrates its investments in science- and technology-related industries and services, which Matthews considers to be the following, among others: telecommunications, telecommunications equipment, computers, semiconductors, semiconductor capital equipment, networking, Internet and online service companies, media, office automation, server hardware producers, software companies (e.g., design, consumer and industrial), biotechnology and medical device technology companies, pharmaceuticals and companies involved in the distribution and servicing of these products.

Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments in science- and technology-related industries and services, which Matthews considers to be the following, among others: telecommunications, telecommunications equipment, computers, semiconductors, semiconductor capital equipment, networking, Internet and online service companies, media, office automation, server hardware producers, software companies (e.g., design, consumer and industrial), biotechnology and medical device technology companies, pharmaceuticals and companies involved in the distribution and servicing of these products.
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:


Political, Social and Economic Risks: 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 Asian region, and particularly China, Japan and South Korea, may be adversely affected by political, military, economic and other factors related to North Korea. In addition, China’s long-running conflict over Taiwan, border disputes with many of its neighbors and historically strained relations with Japan could adversely impact economies in the region. 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. Certain Asian countries are highly dependent upon and may be affected by developments in the United States, Europe and other Asian economies.


Currency Risks: 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 dollar terms if that currency weakens against the dollar. While the Fund is permitted to hedge currency risks, Matthews does not anticipate doing so at this time. Additionally, Asian 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: Many Asian countries are considered emerging or frontier markets. Such markets are often less stable politically and economically than developed markets such as the United States, and investing in these markets involves different and greater risks. There may be less publicly available information about companies in many Asian countries, and the stock exchanges and brokerage industries in many Asian countries typically do not have the level of government oversight as do those in the United States. Securities markets of many Asian countries are also substantially smaller, less liquid and more volatile than securities markets in the United States.


Trading Markets and Depositary Receipts: Asian securities may trade in the form of depositary receipts, including American, European and Global Depositary Receipts. 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: The smaller size and lower levels of liquidity in emerging markets, as well as other factors, may result in changes in the prices of Asian securities that are more volatile than those of companies in more developed regions. This volatility can cause the price of the Fund’s shares (NAV) to go up or down dramatically. Because of this volatility, it is recommended that you invest in the Fund only for the long term (at least five years).


Science and Technology: As a fund that invests in science and technology companies, the Fund is subject to the risks associated with these sectors. This makes the Fund more vulnerable to the price changes of securities issuers in science- and technology-related industries and to factors that affect these industries, relative to a broadly diversified fund.


Certain science- and technology-related companies may face special risks because their products or services may not prove to be commercially successful. Many science and technology companies have limited operating histories and experience in managing adverse market conditions and are also strongly affected by worldwide scientific or technological developments and global demand cycles. As a result, their products may rapidly become obsolete, which could cause a dramatic decrease in the value of their stock. Such companies are also often subject to governmental regulation and may therefore be adversely affected by governmental policies.


Risks Associated with Medium-Sized Companies: Medium-sized 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.

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

Institutional Class Shares were first offered on April 30, 2013. Because the Institutional Class Shares have less than one year of performance, return information is for Investor Class shares not offered in this Prospectus. The Institutional and Investor classes would have substantially similar returns because the shares are invested in the same portfolio of securities and the annual returns would only differ to the extent that the classes do not have the same expenses.


The bar chart below shows the Fund’s performance for the past 10 years 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 and an index of Asian equities tracking a range of technology stocks. The index performance does not take into consideration fees, expenses or taxes. 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 800.789.2742.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart below shows the Fund's performance for the past 10 years 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 800.789.2742
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 RETURNS FOR YEARS ENDED 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter


Q2 2003


28.73%


Worst Quarter


Q4 2008


-24.40%

Bar Chart, Returns for Class Not Offered in Prospectus [Text] rr_BarChartReturnsForClassNotOfferedInProspectus Because the Institutional Class Shares have less than one year of performance, return information is for Investor Class shares not offered in this Prospectus.
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2003
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 28.73%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (24.40%)
Performance Table Market Index Changed rr_PerformanceTableMarketIndexChanged As of April 30, 2013, the primary benchmark index for the Matthews Asia Science and Technology Fund became the MSCI All Country Asia Index.
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes The index performance does not take into consideration fees, expenses or taxes.
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.
Caption rr_AverageAnnualReturnCaption AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2012
MSCI All Country Asia Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 16.04% [1]
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (1.88%) [1]
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 8.99% [1]
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 1.13% [1]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 31, 1999 [1]
MSCI AC Asia IT and Telecom Services Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 15.18%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 0.23%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 8.40%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception (3.58%)
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 31, 1999
Investor Class Shares
  
Risk/Return: rr_RiskReturnAbstract  
Annual Return 2003 rr_AnnualReturn2003 64.95%
Annual Return 2004 rr_AnnualReturn2004 12.84%
Annual Return 2005 rr_AnnualReturn2005 19.82%
Annual Return 2006 rr_AnnualReturn2006 21.29%
Annual Return 2007 rr_AnnualReturn2007 23.74%
Annual Return 2008 rr_AnnualReturn2008 (51.94%)
Annual Return 2009 rr_AnnualReturn2009 70.28%
Annual Return 2010 rr_AnnualReturn2010 2.58%
Annual Return 2011 rr_AnnualReturn2011 (17.26%)
Annual Return 2012 rr_AnnualReturn2012 14.11%
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 14.11%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (0.92%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 12.32%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception (0.09%)
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 27, 1999
Investor Class Shares | After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 14.25% [2]
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (0.84%) [2]
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 12.37% [2]
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception (0.22%) [2]
Investor Class Shares | After Taxes on Distributions and Sale of Fund Shares
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 9.40% [2]
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (0.67%) [2]
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 11.17% [2]
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception (0.15%) [2]
Institutional Class Shares
  
Risk/Return: rr_RiskReturnAbstract  
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Maximum Account Fee on Redemptions (for wire redemptions only) rr_MaximumAccountFee 9
Management Fees rr_ManagementFeesOverAssets 0.67%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Administration and Shareholder Servicing Fees rr_Component1OtherExpensesOverAssets 0.15%
Other Expenses rr_OtherExpensesOverAssets 0.35% [3]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.02%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 104
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 325
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 563
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,248
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess Because the Institutional Class Shares have less than one year of performance, return information is for Investor Class shares not offered in this Prospectus.
[1] As of April 30, 2013, the primary benchmark index for the Matthews Asia Science and Technology Fund became the MSCI All Country Asia Index.
[2] 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.
[3] "Other Expenses" for the Institutional Class are estimated based on the Other Expenses for the Investor Class. Actual fees, as well as the difference in fees between the Institutional Class and the Investor Class, will vary.