Note 10 - Operating Segments (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|---|
Sep. 30, 2016 |
Jun. 30, 2016 |
Sep. 30, 2015 |
Jun. 30, 2016 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| 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) | ||||
| Tangible Asset Impairment Charges | 1,816,000 | |||||
| Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | 8,288,000 | |||||
| Income Tax Expense (Benefit) | $ 37,000 | $ 53,000 | $ (3,093,000) | $ 124,000 | ||
| 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
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| 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
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| 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
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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