v3.25.2
Shareholder Report
 6 Months Ended
Jun. 30, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name INVESTMENT MANAGERS SERIES TRUST
Entity Central Index Key 0001318342
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2025
C000248864 [Member]  
Shareholder Report [Line Items]  
Fund Name GramercyEmerging Markets Debt Fund
Class Name Class A
Trading Symbol GFEAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Gramercy Emerging Markets Debt Fund  (“Fund”) for the period of January 01, 2025 through June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://libertystreetfunds.com/gramercy-emerging-markets-debt-fund/. You can also request this information by contacting us at (800) 207-7108.
Additional Information Phone Number (800) 207-7108
Additional Information Website https://libertystreetfunds.com/gramercy-emerging-markets-debt-fund/
Expenses [Text Block]
Fund Expenses
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Gramercy Emerging Markets Debt Fund
(Class A/GFEAX)		 $57 1.11%1
​1
Annualized.
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.11% [1]
Net Assets $ 58,663,838
Holdings Count | Holding 128
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
The following table outlines key fund statistics that you should pay attention to.
Fund's net assets $58,663,838
Total number of portfolio holdings 128
Portfolio turnover rate as of the end of the reporting period 42%
Holdings [Text Block]
Graphical Representation of Holdings
The tables below show the investment makeup of the Fund, representing percentage of the total net assets of the Fund. The Top Ten Holdings exclude short-term holdings, if any. Interest rates presented in the Top Ten Holdings are as of the reporting period end.
Top Ten Holdings
Brazil Notas do Tesouro Nacional Serie F, 10.000%, 1/1/2031 3.8%
Republic of South Africa Government Bond, 6.500%, 2/28/2041 3.1%
Mexican Bonos, 5.750%, 3/5/2026 2.5%
Czech Republic Government Bond, 3.000%, 3/3/2033 1.9%
Turkiye Garanti Bankasi A.S., 8.125%, 1/8/2036 1.7%
Banco Davivienda S.A., 8.125%, 7/2/2035 1.6%
Qatar Government International Bond, 4.750%, 5/29/2034 1.5%
Colombian TES, 6.000%, 4/28/2028 1.4%
MDGH GMTN RSC Ltd., 2.500%, 6/3/2031 1.3%
Indonesia Government International Bond, 3.700%, 10/30/2049 1.2%
Asset Allocation
Graphical Representation - Allocation 1 Chart
Largest Holdings [Text Block]
Top Ten Holdings
Brazil Notas do Tesouro Nacional Serie F, 10.000%, 1/1/2031 3.8%
Republic of South Africa Government Bond, 6.500%, 2/28/2041 3.1%
Mexican Bonos, 5.750%, 3/5/2026 2.5%
Czech Republic Government Bond, 3.000%, 3/3/2033 1.9%
Turkiye Garanti Bankasi A.S., 8.125%, 1/8/2036 1.7%
Banco Davivienda S.A., 8.125%, 7/2/2035 1.6%
Qatar Government International Bond, 4.750%, 5/29/2034 1.5%
Colombian TES, 6.000%, 4/28/2028 1.4%
MDGH GMTN RSC Ltd., 2.500%, 6/3/2031 1.3%
Indonesia Government International Bond, 3.700%, 10/30/2049 1.2%
C000248863 [Member]  
Shareholder Report [Line Items]  
Fund Name GramercyEmerging Markets Debt Fund
Class Name Institutional Class
Trading Symbol GFEMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Gramercy Emerging Markets Debt Fund  (“Fund”) for the period of January 01, 2025 through June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://libertystreetfunds.com/gramercy-emerging-markets-debt-fund/. You can also request this information by contacting us at (800) 207-7108.
Additional Information Phone Number (800) 207-7108
Additional Information Website https://libertystreetfunds.com/gramercy-emerging-markets-debt-fund/
Expenses [Text Block]
Fund Expenses
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Gramercy Emerging Markets Debt Fund
(Institutional Class/GFEMX)		 $44 0.86%1
​1
Annualized.
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.86% [2]
Net Assets $ 58,663,838
Holdings Count | Holding 128
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
The following table outlines key fund statistics that you should pay attention to.
Fund's net assets $58,663,838
Total number of portfolio holdings 128
Portfolio turnover rate as of the end of the reporting period 42%
Holdings [Text Block]
Graphical Representation of Holdings
The tables below show the investment makeup of the Fund, representing percentage of the total net assets of the Fund. The Top Ten Holdings exclude short-term holdings, if any. Interest rates presented in the Top Ten Holdings are as of the reporting period end.
Top Ten Holdings
Brazil Notas do Tesouro Nacional Serie F, 10.000%, 1/1/2031 3.8%
Republic of South Africa Government Bond, 6.500%, 2/28/2041 3.1%
Mexican Bonos, 5.750%, 3/5/2026 2.5%
Czech Republic Government Bond, 3.000%, 3/3/2033 1.9%
Turkiye Garanti Bankasi A.S., 8.125%, 1/8/2036 1.7%
Banco Davivienda S.A., 8.125%, 7/2/2035 1.6%
Qatar Government International Bond, 4.750%, 5/29/2034 1.5%
Colombian TES, 6.000%, 4/28/2028 1.4%
MDGH GMTN RSC Ltd., 2.500%, 6/3/2031 1.3%
Indonesia Government International Bond, 3.700%, 10/30/2049 1.2%
Asset Allocation
Graphical Representation - Allocation 1 Chart
Largest Holdings [Text Block]
Top Ten Holdings
Brazil Notas do Tesouro Nacional Serie F, 10.000%, 1/1/2031 3.8%
Republic of South Africa Government Bond, 6.500%, 2/28/2041 3.1%
Mexican Bonos, 5.750%, 3/5/2026 2.5%
Czech Republic Government Bond, 3.000%, 3/3/2033 1.9%
Turkiye Garanti Bankasi A.S., 8.125%, 1/8/2036 1.7%
Banco Davivienda S.A., 8.125%, 7/2/2035 1.6%
Qatar Government International Bond, 4.750%, 5/29/2034 1.5%
Colombian TES, 6.000%, 4/28/2028 1.4%
MDGH GMTN RSC Ltd., 2.500%, 6/3/2031 1.3%
Indonesia Government International Bond, 3.700%, 10/30/2049 1.2%
[1] Annualized.
[2] Annualized.