Expense Example - Dunham Real Estate Stock Fund	Oct. 23, 2025 USD ($)
Dunham Real Estate Stock Fund Class A
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 740
Expense Example, with Redemption, 3 Years	1,086
Expense Example, with Redemption, 5 Years	1,455
Expense Example, with Redemption, 10 Years	2,488
Dunham Real Estate Stock Fund Class C
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	250
Expense Example, with Redemption, 3 Years	770
Expense Example, with Redemption, 5 Years	1,316
Expense Example, with Redemption, 10 Years	2,806
Dunham Real Estate Stock Fund Class N
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	150
Expense Example, with Redemption, 3 Years	465
Expense Example, with Redemption, 5 Years	803
Expense Example, with Redemption, 10 Years	$ 1,757

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

Name:	oef_ExpenseExampleYear01
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

Name:	oef_ExpenseExampleYear03
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

Name:	oef_ExpenseExampleYear05
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

Name:	oef_ExpenseExampleYear10
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 1
-Subsection a

Name:	dei_LegalEntityAxis=df_S000020971Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: