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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName Dunham Funds
Prospectus Date rr_ProspectusDate Feb. 28, 2020
Dunham High-Yield Bond Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Dunham High-Yield Bond Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective:
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide a high level of current income,
Objective, Secondary [Text Block] rr_ObjectiveSecondaryTextBlock
with capital appreciation as a secondary goal.
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 the Fund. You may qualify for sales charge discounts on purchases of Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts is available from your financial professional and in How to Purchase Shares on page 89 of the Fund's Prospectus and in How to Buy and Sell Shares on page 88 of the Fund's Statement of Additional Information.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
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 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, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 70% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 70.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts on purchases of Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading Example:
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 upon these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies:
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund's Sub-Adviser seeks to achieve the Fund's investment objectives by investing primarily in lower-rated (generally rated BB and B), and unrated, higher-risk corporate bonds of any maturity. The Fund normally invests at least 80% of its assets (defined as net assets plus any borrowing for investment purposes) in debt securities and convertible securities rated below investment grade (rated BB+ or lower) by S&P or comparably rated by another nationally recognized statistical rating organization (NRSRO), also known as "high-yield" or "junk" bonds, and in unrated debt securities determined by the Sub-Adviser to be of comparable quality. 

The Fund's Sub-Adviser selects investments and seeks to reduce risk through portfolio diversification, credit analysis and attention to current developments in economic conditions. In general, the Sub-Adviser typically buys high-yield securities that provide high current income that it believes possess attractive risk/reward characteristics. The Sub-Adviser measures a security's risk/reward ratio by its yield and expected probability of default when compared to a peer group of securities with similar credit risk. The Sub-Adviser typically will sell securities when, in the Sub-Adviser’s view, they no longer meet the buy criteria and when an issuer's credit fundamentals deteriorate.

The Fund may also engage in securities lending.
Risk [Heading] rr_RiskHeading Principal Investment Risks:
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

As with all mutual funds, there is the risk that you could lose money through your investment in the Fund. Although the Fund will strive to meet its investment objective, there is no assurance that it will do so. Many factors affect the Fund's net asset value and performance.

Lower-Rated Securities Risk – Securities rated below investment-grade, sometimes called "high-yield" or "junk" bonds, are speculative investments that generally have more credit risk than higher-rated securities. Companies issuing high yield fixed-income securities are not as strong financially as those issuing securities with higher credit ratings and are more likely to encounter financial difficulties. Lower rated issuers are more likely to default and their securities could become worthless.

Credit Risk – Issuers of debt securities may suffer from a reduced ability to repay their interest and principal obligations. They may even default on interest and/or principal payments due to the Fund. An increase in credit risk or a default will cause the value of Fund debt securities to decline. Issuers with lower credit quality are more susceptible to economic or industry downturns and are more likely to default.

Interest Rate Risk – In general, the price of a debt security falls when interest rates rise. Debt securities have varying levels of sensitivity to changes in interest rates. Securities with longer maturities may be more sensitive to interest rate changes.

Call or Redemption Risk – If interest rates decline, issuers of debt securities may exercise redemption or call provisions. This may force the Fund to reinvest redemption or call proceeds in securities with lower yields, which may reduce Fund performance.

Changing Fixed Income Market Conditions Risk – During periods of sustained rising rates, fixed income risks will be amplified. If the U.S. Federal Reserve’s Federal Open Market Committee (“FOMC”) raises the federal funds interest rate target, interest rates across the U.S. financial system may rise. Rising rates tend to decrease liquidity, increase trading costs, and increase volatility, all of which make portfolio management more difficult and costly to the Fund and its shareholders.

Private Placement Risk – Privately issued securities, including those which may be resold only in accordance with Rule 144A under the Securities Act of 1933, as amended, are restricted securities that are not registered with the U.S. Securities and Exchange Commission (“SEC”). Accordingly, the liquidity of the market for specific privately issued securities may vary. Delay or difficulty in selling such securities may result in a loss to the Fund. Privately issued securities that the Sub-Adviser determines to be “illiquid” are subject to the Fund’s policy of not investing more than 15% of its net assets in illiquid securities.

Liquidity Risk – Some securities may have few market-makers and low trading volume, which tend to increase transaction costs and may make it impossible for the Fund to dispose of a security position at all or at a price which represents current or fair market value.

Management Risk – The Fund is subject to management risk because it is an actively managed investment portfolio. The Sub-Adviser will apply its investment techniques and risk analyses in making investment decisions for the Fund, but there is no guarantee that its decisions will produce the intended result. The successful use of hedging and risk management techniques may be adversely affected by imperfect correlation between movements in the price of the hedging vehicles and the securities being hedged.

Securities Lending Risk – The risk of securities lending is that the financial institution that borrows securities from the Fund could go bankrupt or otherwise default on its commitment under the securities lending agreement and the Fund might not be able to recover the loaned securities or their value.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, there is the risk that you could lose money through your investment in the Fund.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance:
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of Class N Shares of the Fund from year to year and by showing how the Fund's Class A, Class C and Class N average annual returns compare with those of a broad measure of market performance. The Class A sales charge is reflected in the average annual total return table. Past performance (before and after taxes) does not necessarily indicate how a Fund will perform in the future. Updated performance information is available at no cost by visiting www.dunham.com or by calling toll free (888) 3DUNHAM (338-6426).
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of Class N Shares of the Fund from year to year and by showing how the Fund's Class A, Class C and Class N average annual returns compare with those of a broad measure of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone (888) 3DUNHAM (338-6426)
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.dunham.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) does not necessarily indicate how a Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Class N Shares Annual Total Return for Years Ended December 31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

During the periods shown in the bar chart, the highest return for a quarter was 8.03% (quarter ended March 31, 2019 and the lowest return for a quarter was -5.30% (quarter ended December 31, 2018).
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN For the periods ended December 31, 2019
Performance Table Does Reflect Sales Loads rr_PerformanceTableDoesReflectSalesLoads The Class A sales charge is reflected in the average annual total return table.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are estimated, and are based on 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 individual investor's tax situation and are likely to differ from those shown.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you own shares of the Fund in a tax-deferred account, such as an individual retirement account or a 401(k) plan, this information is not applicable to your investment, because such accounts are only subject to taxes upon distribution.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After tax returns for Class C and Class A shares, which are not shown, will vary from those of Class N shares.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

After-tax returns are estimated, and are based on 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 individual investor's tax situation and are likely to differ from those shown. If you own shares of the Fund in a tax-deferred account, such as an individual retirement account or a 401(k) plan, this information is not applicable to your investment, because such accounts are only subject to taxes upon distribution. In certain cases, after-tax returns may be higher than the other return figures for the same period. After tax returns for Class C and Class A shares, which are not shown, will vary from those of Class N shares.
Dunham High-Yield Bond Fund | Barclays U.S. Corporate High-Yield Bond Ba/B 2% Issuer Capped Index  
Risk/Return: rr_RiskReturnAbstract  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel Barclays U.S. Corporate High-Yield Bond Ba/B 2% Issuer Capped Index
1 Year rr_AverageAnnualReturnYear01 15.78%
5 Years rr_AverageAnnualReturnYear05 6.04%
10 Years rr_AverageAnnualReturnYear10 7.42%
Dunham High-Yield Bond Fund | Morningstar High-Yield Bond Category  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel Morningstar High-Yield Bond Category (return before taxes)
1 Year rr_AverageAnnualReturnYear01 12.62% [1]
5 Years rr_AverageAnnualReturnYear05 4.87% [1]
10 Years rr_AverageAnnualReturnYear10 6.42% [1]
Dunham High-Yield Bond Fund | Class A  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.50%
Maximum Deferred Sales Charge (Load) (as a % of the original purchase price for purchases of $1 million or more) rr_MaximumDeferredSalesChargeOverOfferingPrice 0.75%
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and other Distributions rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee rr_RedemptionFeeOverRedemption none
Exchange Fee rr_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.85% [2]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.28%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.38%
1 Year rr_ExpenseExampleYear01 $ 584
3 Years rr_ExpenseExampleYear03 867
5 Years rr_ExpenseExampleYear05 1,171
10 Years rr_ExpenseExampleYear10 $ 2,033
Label rr_AverageAnnualReturnLabel return before taxes
1 Year rr_AverageAnnualReturnYear01 9.05%
5 Years rr_AverageAnnualReturnYear05 3.62%
10 Years rr_AverageAnnualReturnYear10 5.18%
Dunham High-Yield Bond Fund | Class C  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a % of the original purchase price for purchases of $1 million or more) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and other Distributions rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee rr_RedemptionFeeOverRedemption none
Exchange Fee rr_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.85% [2]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.75%
Other Expenses rr_OtherExpensesOverAssets 0.28%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.88%
1 Year rr_ExpenseExampleYear01 $ 191
3 Years rr_ExpenseExampleYear03 591
5 Years rr_ExpenseExampleYear05 1,016
10 Years rr_ExpenseExampleYear10 $ 2,201
Label rr_AverageAnnualReturnLabel return before taxes
1 Year rr_AverageAnnualReturnYear01 13.64%
5 Years rr_AverageAnnualReturnYear05 4.08%
10 Years rr_AverageAnnualReturnYear10 5.15%
Dunham High-Yield Bond Fund | Class N  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a % of the original purchase price for purchases of $1 million or more) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and other Distributions rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee rr_RedemptionFeeOverRedemption none
Exchange Fee rr_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.85% [2]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.28%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.13%
1 Year rr_ExpenseExampleYear01 $ 115
3 Years rr_ExpenseExampleYear03 359
5 Years rr_ExpenseExampleYear05 622
10 Years rr_ExpenseExampleYear10 $ 1,375
Annual Return 2010 rr_AnnualReturn2010 14.56%
Annual Return 2011 rr_AnnualReturn2011 3.81%
Annual Return 2012 rr_AnnualReturn2012 12.64%
Annual Return 2013 rr_AnnualReturn2013 5.10%
Annual Return 2014 rr_AnnualReturn2014 (0.15%)
Annual Return 2015 rr_AnnualReturn2015 (2.43%)
Annual Return 2016 rr_AnnualReturn2016 10.98%
Annual Return 2017 rr_AnnualReturn2017 6.61%
Annual Return 2018 rr_AnnualReturn2018 (4.27%)
Annual Return 2019 rr_AnnualReturn2019 14.55%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel the highest return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2019
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 8.03%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel the lowest return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (5.30%)
Label rr_AverageAnnualReturnLabel return before taxes
1 Year rr_AverageAnnualReturnYear01 14.55%
5 Years rr_AverageAnnualReturnYear05 4.83%
10 Years rr_AverageAnnualReturnYear10 5.93%
Dunham High-Yield Bond Fund | Class N | return after taxes on distributions  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel return after taxes on distributions                            
1 Year rr_AverageAnnualReturnYear01 12.26%
5 Years rr_AverageAnnualReturnYear05 2.67%
10 Years rr_AverageAnnualReturnYear10 3.68%
Dunham High-Yield Bond Fund | Class N | return after taxes on distributions and sale of Fund shares  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel return after taxes on distributions and sale of Fund shares
1 Year rr_AverageAnnualReturnYear01 8.56%
5 Years rr_AverageAnnualReturnYear05 2.70%
10 Years rr_AverageAnnualReturnYear10 3.62%
[1] The Morningstar High-Yield Bond Category is generally representative of mutual funds that primarily invest in U.S. high-income debt securities where at least 65% or more of bond assets are not rated or are rated by a major agency such as Standard & Poor's or Moody's at the level of BB (considered speculative for taxable bonds) and below.
[2] The Sub-Advisory Fee is a fulcrum fee with a base or fulcrum of 32 bps (0.32%) and can range from 0.22% to 0.42% based on the Fund’s performance relative to the Barclays U.S. Corporate High Yield Bond Ba/B 2% Issuer Capped Index, the Fund’s Benchmark.