v3.26.1
Expense Example, No Redemption - VALUE LINE MID CAP FOCUSED FUND, INC.
Jun. 18, 2026
USD ($)
VALUE LINE MID CAP FOCUSED FUND, INC.  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 111
Expense Example, No Redemption, 3 Years 347
Expense Example, No Redemption, 5 Years 601
Expense Example, No Redemption, 10 Years 1,329
Institutional Class  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 87
Expense Example, No Redemption, 3 Years 271
Expense Example, No Redemption, 5 Years 471
Expense Example, No Redemption, 10 Years $ 1,049