Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives
|
12 Months Ended |
Dec. 31, 2015 |
|---|
| Minimum [Member] | Building and Building Improvements [Member] |
|
| Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives [Line Items] |
|
| Useful life |
20 years
|
| Minimum [Member] | Machinery and Equipment [Member] |
|
| Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives [Line Items] |
|
| Useful life |
3 years
|
| Minimum [Member] | Transportation Equipment [Member] |
|
| Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives [Line Items] |
|
| Useful life |
5 years
|
| Minimum [Member] | Other Capitalized Property Plant and Equipment [Member] |
|
| Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives [Line Items] |
|
| Useful life |
5 years
|
| Maximum [Member] | Building and Building Improvements [Member] |
|
| Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives [Line Items] |
|
| Useful life |
39 years
|
| Maximum [Member] | Machinery and Equipment [Member] |
|
| Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives [Line Items] |
|
| Useful life |
33 years
|
| Maximum [Member] | Transportation Equipment [Member] |
|
| Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives [Line Items] |
|
| Useful life |
33 years
|
| Maximum [Member] | Other Capitalized Property Plant and Equipment [Member] |
|
| Note 2 - Significant Accounting Policies (Details) - Estimated Useful Lives [Line Items] |
|
| Useful life |
33 years
|