v3.26.1
Shareholder Report
6 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name LKCM Funds
Entity Central Index Key 0000918942
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Institutional Class  
Shareholder Report [Line Items]  
Fund Name LKCM Balanced Fund
Class Name LKCM Balanced Fund
Trading Symbol LKBAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the LKCM Balanced Fund for the period of January 1, 2026, to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.lkcmfunds.com/literatureYou can also request this information by contacting us at 1-800-688-LKCM.
Additional Information Phone Number 1-800-688-LKCM
Additional Information Website https://www.lkcmfunds.com/literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
LKCM Balanced Fund
$40
0.80%
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.80%
Net Assets $ 105,022,014
Holdings Count | $ / shares 122
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$105,022,014
Number of Holdings
122
Portfolio Turnover
2%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors (% of Net Assets)
Information Technology
21.1
%
Industrials
13.0
%
Health Care
10.7
%
Financials
10.6
%
Energy
9.7
%
Materials
8.3
%
Consumer Staples
7.6
%
Communication Services
7.4
%
Consumer Discretionary
6.4
%
Utilities
2.7
%
Real Estate
1.4
%
Money Market Funds
1.1
%
Security Type (% of Net Assets)
Equity
68.8
%
Fixed Income
29.8
%
Cash Equivalents
1.4
%
Top 10 Issuers (% of Net Assets)
Apple Inc
4.2
%
NVIDIA Corp
3.8
%
Alphabet Inc
3.0
%
Amazon.com Inc
2.3
%
Microsoft Corp
2.3
%
Invesco Government & Agency Portfolio
1.8
%
Linde PLC
1.8
%
Meta Platforms Inc
1.8
%
The Coca-Cola Co.
1.7
%
L3Harris Technologies Inc
1.6
%
Updated Prospectus Web Address https://www.lkcmfunds.com/literature.
Institutional Class  
Shareholder Report [Line Items]  
Fund Name LKCM Equity Fund
Class Name LKCM Equity Fund
Trading Symbol LKEQX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the LKCM Equity Fund for the period of January 1, 2026, to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.lkcmfunds.com/literatureYou can also request this information by contacting us at 1-800-688-LKCM.
Additional Information Phone Number 1-800-688-LKCM
Additional Information Website https://www.lkcmfunds.com/literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
LKCM Equity Fund
$41
0.80%
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.80%
Net Assets $ 498,868,861
Holdings Count | $ / shares 50
Investment Company Portfolio Turnover 3.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$498,868,861
Number of Holdings
50
Portfolio Turnover
3%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors (% of Net Assets)
Industrials
29.0
%
Information Technology
22.5
%
Materials
8.7
%
Communication Services
8.6
%
Energy
7.5
%
Health Care
6.7
%
Consumer Discretionary
6.4
%
Financials
6.4
%
Consumer Staples
2.4
%
Money Market Funds
1.8
%
Top 10 Issuers (% of Net Assets)
Alphabet Inc
7.9
%
NVIDIA Corp
5.6
%
Microsoft Corp
5.2
%
Apple Inc
5.2
%
Valmont Industries Inc
3.5
%
Teledyne Technologies Inc
3.3
%
JPMorgan Chase & Co.
3.3
%
Ecolab Inc
3.1
%
Waste Connections Inc
3.0
%
Linde PLC
2.3
%
Updated Prospectus Web Address https://www.lkcmfunds.com/literature.
Institutional Class  
Shareholder Report [Line Items]  
Fund Name LKCM Fixed Income Fund
Class Name LKCM Fixed Income Fund
Trading Symbol LKFIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the LKCM Fixed Income Fund for the period of January 1, 2026, to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.lkcmfunds.com/literatureYou can also request this information by contacting us at 1-800-688-LKCM.
Additional Information Phone Number 1-800-688-LKCM
Additional Information Website https://www.lkcmfunds.com/literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
LKCM Fixed Income Fund
$25
0.50%
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.50%
Net Assets $ 268,369,360
Holdings Count | $ / shares 78
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$268,369,360
Number of Holdings
78
Portfolio Turnover
8%
Effective Duration
3.66 years
30-Day SEC Yield
4.12%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors (% of Net Assets)
Industrials
15.2
%
Information Technology
13.9
%
Government Bonds
13.1
%
Health Care
12.8
%
Energy
10.7
%
Communication Services
7.6
%
Consumer Discretionary
6.8
%
U.S. Government Sponsored Entities
6.1
%
Financials
5.4
%
Real Estate
4.6
%
Cash & Other
3.8
%
Top 10 Issuers (% of Net Assets)
Emerson Electric Co., 3.18%, 03/15/35
3.1
%
United States Treasury Note/Bond, 3.14%, 11/15/32
3.1
%
Stryker Corp., 2.82%, 02/10/30
2.8
%
Kinder Morgan Inc., 2.76%, 06/01/33
2.7
%
Trimble Inc., 2.34%, 03/15/33
2.3
%
Tractor Supply Co., 2.23%, 10/15/34
2.2
%
Waste Management Inc., 2.17%, 03/15/28
2.1
%
Roper Technologies Inc., 2.16%, 07/31/33
2.1
%
L3Harris Technologies Inc., 2.11%, 11/15/31
2.1
%
Amgen Inc., 2.09%, 02/01/28
2.1
%
Updated Prospectus Web Address https://www.lkcmfunds.com/literature.
Institutional Class  
Shareholder Report [Line Items]  
Fund Name LKCM International Equity Fund
Class Name LKCM International Equity Fund
Trading Symbol LKINX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the LKCM International Equity Fund for the period of January 1, 2026, to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.lkcmfunds.com/literatureYou can also request this information by contacting us at 1-800-688-LKCM.
Additional Information Phone Number 1-800-688-LKCM
Additional Information Website https://www.lkcmfunds.com/literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
LKCM International Equity Fund
$52
1.00%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.00%
Net Assets $ 101,453,353
Holdings Count | $ / shares 48
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$101,453,353
Number of Holdings
48
Portfolio Turnover
6%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors (% of Net Assets)
Financials
22.0
%
Industrials
16.8
%
Information Technology
12.5
%
Health Care
11.6
%
Consumer Discretionary
8.6
%
Money Market Funds
6.7
%
Consumer Staples
6.3
%
Materials
6.1
%
Energy
5.9
%
Communication Services
3.5
%
Top 10 Issuers (% of Net Assets)
ASML Holding NV
3.7
%
Infineon Technologies AG
3.2
%
MSILF Government Portfolio
3.0
%
Invesco Government & Agency Portfolio
3.0
%
Royal Bank of Canada
2.6
%
ABB Ltd
2.5
%
InterContinental Hotels Group PLC
2.5
%
ING Groep NV
2.4
%
Barclays PLC
2.4
%
Coca-Cola HBC AG
2.3
%
Top Ten Countries (% of Net Assets)
United Kingdom
20.8
%
Germany
14.1
%
France
13.4
%
Switzerland
11.1
%
Canada
8.9
%
Netherlands
8.1
%
Japan
4.4
%
Australia
2.2
%
Finland
2.0
%
Sweden
2.0
%
Updated Prospectus Web Address https://www.lkcmfunds.com/literature.
Institutional Class  
Shareholder Report [Line Items]  
Fund Name LKCM Small Cap Equity Fund
Class Name LKCM Small Cap Equity Fund
Trading Symbol LKSCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the LKCM Small Cap Equity Fund for the period of January 1, 2026, to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.lkcmfunds.com/literatureYou can also request this information by contacting us at 1-800-688-LKCM.
Additional Information Phone Number 1-800-688-LKCM
Additional Information Website https://www.lkcmfunds.com/literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
LKCM Small Cap Equity Fund
$52
1.00%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.00%
Net Assets $ 362,929,322
Holdings Count | $ / shares 76
Investment Company Portfolio Turnover 23.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$362,929,322
Number of Holdings
76
Portfolio Turnover
23%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors (% of Net Assets)
Industrials
20.8
%
Information Technology
15.2
%
Health Care
12.5
%
Financials
11.9
%
Consumer Discretionary
10.7
%
Energy
7.1
%
Money Market Funds
7.0
%
Consumer Staples
5.9
%
Materials
4.9
%
Communication Services
2.9
%
Real Estate
1.1
%
Top 10 Issuers (% of Net Assets)
MSILF Government Portfolio
3.0
%
Invesco Government & Agency Portfolio
3.0
%
Rogers Corp
2.8
%
Tower Semiconductor Ltd
2.6
%
Materion Corp
2.2
%
The Vita Coco Co Inc
2.2
%
Lumentum Holdings Inc
2.1
%
Ciena Corp
2.1
%
Mercury Systems Inc
2.0
%
CECO Environmental Corp
2.0
%
Updated Prospectus Web Address https://www.lkcmfunds.com/literature.
Institutional Class  
Shareholder Report [Line Items]  
Fund Name LKCM Small-Mid Cap Equity Fund
Class Name LKCM Small-Mid Cap Equity Fund
Trading Symbol LKSMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the LKCM Small-Mid Cap Equity Fund for the period of January 1, 2026, to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.lkcmfunds.com/literatureYou can also request this information by contacting us at 1-800-688-LKCM.
Additional Information Phone Number 1-800-688-LKCM
Additional Information Website https://www.lkcmfunds.com/literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
LKCM Small-Mid Cap Equity Fund
$52
1.00%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.00%
Net Assets $ 46,408,056
Holdings Count | $ / shares 57
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$46,408,056
Number of Holdings
57
Portfolio Turnover
35%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors (% of Net Assets)
Industrials
24.9
%
Financials
18.3
%
Health Care
13.4
%
Information Technology
12.3
%
Materials
9.0
%
Consumer Discretionary
7.8
%
Energy
4.9
%
Money Market Funds
3.1
%
Utilities
2.5
%
Real Estate
1.9
%
Consumer Staples
1.2
%
Communication Services
0.7
%
Top 10 Issuers (% of Net Assets)
BrightSpring Health Services Inc
5.5
%
FTAI Aviation Ltd
3.9
%
Tower Semiconductor Ltd
3.3
%
Materion Corp
3.2
%
Natera Inc
3.2
%
FirstCash Holdings Inc
3.0
%
Invesco Government & Agency Portfolio
3.0
%
Mercury Systems Inc
2.8
%
NCR Atleos Corp
2.7
%
SPX Technologies Inc
2.6
%
Updated Prospectus Web Address https://www.lkcmfunds.com/literature.
LKCM Aquinas Catholic Equity Fund  
Shareholder Report [Line Items]  
Fund Name LKCM Aquinas Catholic Equity Fund
Class Name LKCM Aquinas Catholic Equity Fund
Trading Symbol AQEIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the LKCM Aquinas Catholic Equity Fund for the period of  January 1, 2026, to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.aquinasfunds.com/applications-documents/You can also request this information by contacting us at 1-800-423-6369.
Additional Information Phone Number 1-800-423-6369
Additional Information Website https://www.aquinasfunds.com/applications-documents/
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
LKCM Aquinas Catholic Equity Fund
$50
1.00%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 1.00%
Net Assets $ 55,262,124
Holdings Count | $ / shares 44
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$55,262,124
Number of Holdings
44
Portfolio Turnover
8%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors (% of Net Assets)
Information Technology
28.4
%
Materials
12.7
%
Industrials
12.0
%
Consumer Discretionary
11.1
%
Energy
8.0
%
Communication Services
7.6
%
Health Care
6.3
%
Consumer Staples
4.1
%
Utilities
3.7
%
Financials
3.7
%
Money Market Funds
2.4
%
Top 10 Issuers (% of Net Assets)
Alphabet Inc
6.1
%
NVIDIA Corp
5.4
%
Palo Alto Networks Inc
4.3
%
Apple Inc
4.2
%
Microsoft Corp
4.0
%
Amazon.com Inc
3.5
%
Corteva Inc
3.5
%
Stryker Corp
3.1
%
The Sherwin-Williams Co.
3.1
%
Teledyne Technologies Inc
3.0
%
Updated Prospectus Web Address https://www.aquinasfunds.com/applications-documents/