|
Summary of Significant Accounting Policies (Details 2)
|
12 Months Ended |
|---|---|
|
Dec. 31, 2012
|
|
|
Building and Building Improvements | Minimum
|
|
| Property and equipment | |
| Estimated useful life | 25 years |
|
Building and Building Improvements | Maximum
|
|
| Property and equipment | |
| Estimated useful life | 30 years |
|
Office Equipment | Minimum
|
|
| Property and equipment | |
| Estimated useful life | 3 years |
|
Office Equipment | Maximum
|
|
| Property and equipment | |
| Estimated useful life | 10 years |
|
Railroad Transportation Equipment
|
|
| Property and equipment | |
| Estimated useful life | 25 years |
|
Machinery and Equipment | Minimum
|
|
| Property and equipment | |
| Estimated useful life | 5 years |
|
Machinery and Equipment | Maximum
|
|
| Property and equipment | |
| Estimated useful life | 15 years |
|
Leasehold Improvements | Minimum
|
|
| Property and equipment | |
| Estimated useful life | 2 years |
|
Leasehold Improvements | Maximum
|
|
| Property and equipment | |
| Estimated useful life | 10 years |