| 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 | 11.052 | 14.059 | 79% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 250 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 814M | 163B | 0% |
| Annual Yield % from dividends | 0.00 | 0.00 | - |
| Returns for 1 year | 8.70 | 11.50 | 76% |
| Returns for 3 years | 65.78 | 49.30 | 133% |
| Returns for 5 years | 13.99 | 16.95 | 83% |
| Returns for 10 years | -24.34 | 86.91 | -28% |