Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | ||
|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
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| VALUE LINE CORE BOND FUND | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 0.65% | (0.95%) | 0.79% | ||
| VALUE LINE CORE BOND FUND | After Taxes on Distributions | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | (0.87%) | (1.95%) | (0.17%) | ||
| VALUE LINE CORE BOND FUND | After Taxes on Distributions and Sales | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 0.38% | (1.10%) | 0.21% | ||
| Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 1.25% | (0.33%) | 1.35% | |
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