Note 10 - Operating Segments (Details Textual) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2016
USD ($)
|
Jun. 30, 2015
USD ($)
|
Jun. 30, 2016
USD ($)
|
Jun. 30, 2015
USD ($)
|
|
| M&EC [Member] | Permit [Member] | ||||
| Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | $ 8,288,000 | $ 8,288,000 | ||
| M&EC [Member] | ||||
| Tangible Asset Impairment Charges | 1,816,000 | |||
| Income Tax Expense (Benefit) | (3,203,000) | $ (3,203,000) | ||
| Number of Reportable Segments | 3 | |||
| Tangible Asset Impairment Charges | 1,816,000 | $ 1,816,000 | ||
| Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | 8,288,000 | 8,288,000 | ||
| Income Tax Expense (Benefit) | $ (3,167,000) | $ 36,000 | $ (3,130,000) | $ 71,000 |
| X | ||||||||||
- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
|
| X | ||||||||||
- Definition The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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