Depreciation and amortization is determined for financial reporting purposes by using the straight-line method over the following estimated useful lives:
| Years | ||
|
Computer equipment and software |
3-5 | |
|
Machinery and other equipment |
3-5 | |
|
Buildings |
25-40 | |
|
Furniture and fixtures |
5 | |
|
Transportation equipment |
1.5-5 |