|
|
|
Estimated Useful |
|
December 31, |
|
||||||
|
|
|
Lives (Years) |
|
2016 |
|
2015 |
|
||||
|
Land |
|
Not applicable |
|
$ |
35,042 |
|
$ |
44,167 |
|
||
|
Land and waterway improvements |
|
1 |
- |
20 |
|
|
14,691 |
|
|
13,151 |
|
|
Buildings |
|
2 |
- |
40 |
|
|
57,555 |
|
|
57,389 |
|
|
Machinery and equipment(1) |
|
1 |
- |
20 |
|
|
670,085 |
|
|
654,670 |
|
|
Utility and supply lines |
|
1 |
- |
10 |
|
|
7,359 |
|
|
7,081 |
|
|
Leasehold interests |
|
1 |
- |
45 |
|
|
39,234 |
|
|
43,421 |
|
|
Other property |
|
1 |
- |
8 |
|
|
27,051 |
|
|
23,043 |
|
|
Construction in process |
|
Not applicable |
|
|
83,083 |
|
|
51,144 |
|
||
|
Property, plant and equipment |
|
|
|
|
|
|
934,100 |
|
|
894,066 |
|
|
Less: accumulated depreciation |
|
|
|
|
|
|
(420,343) |
|
|
(375,315) |
|
|
Property, plant and equipment, net |
|
|
|
|
|
$ |
513,757 |
|
$ |
518,751 |
|
|
(1) |
Approximately 95% of our machinery and equipment had a useful life of three to ten years as of December 31, 2016 and 2015. |