Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Operating Segments (Details Textual)

v3.7.0.1
Note 10 - Operating Segments (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
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) $ 66,000 (3,167,000) $ 147,000 (3,130,000)
M&EC [Member]        
Tangible Asset Impairment Charges   1,816,000    
Income Tax Expense (Benefit)   3,203,000   $ 3,203,000
M&EC [Member] | Permit [Member]        
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)   $ 8,288,000