| NBFAX | NPFCX | NBFAX / NPFCX | |
| Total Expense Ratio | 1.35 | 1.48 | 91% |
| Annual Report Gross Expense Ratio | 1.35 | 1.48 | 91% |
| Fund Existence | 29 years | 25 years | - |
| Gain YTD | 19.289 | 15.734 | 123% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 250 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 814M | 159B | 1% |
| Annual Yield % from dividends | 0.00 | 0.00 | - |
| Returns for 1 year | 19.05 | 10.60 | 180% |
| Returns for 3 years | 74.69 | 43.13 | 173% |
| Returns for 5 years | 20.15 | 22.04 | 91% |
| Returns for 10 years | -30.84 | 78.42 | -39% |