| Current period | Year (-1) | Current period | Year (-1) | ||||||||||||||
| Consolidated | Consolidated | Solo | Solo | ||||||||||||||
| Avg. weighted amortization rate, pct. | Cost | Accrued amortization | Provision for decrease in value | Avg. weighted amortization rate, pct. | Cost | Accrued amortization | Provision for decrease in value | Avg. weighted amortization rate, pct. | Cost | Accrued amortization | Provision for decrease in value | Avg. weighted amortization rate, pct. | Cost | Accrued amortization | Provision for decrease in value | ||
| 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 5 | 6 | 7 | 8 | ||
| Intellectual property rights (patents) | 1 | ||||||||||||||||
| Rights and use of customer databases | 2 | ||||||||||||||||
| Other amortizable expenses | 3 | ||||||||||||||||