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Note 11 - Income Taxes (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Effective Income Tax Rate Reconciliation, Percent | 5.70% | (28.00%) | 8.40% | (20.70%)
Income Tax Expense (Benefit) | $ 66,000 | $ (3,167,000) | $ 147,000 | $ (3,130,000)
M&EC [Member] |  |  |  |
Income Tax Expense (Benefit) |  | $ 3,203,000 |  | $ 3,203,000

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