Note 1 - Interim Financial Statements (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015
Disposal Group, Expected to Market for Sale, Not Discontinued Operations [Member]
Asset Impairment Charges	$ 50,700	$ 200
Assets Impairment Charges, Income Tax Benefit	21,100
Deferred Tax Assets, Net of Valuation Allowance	$ 66,400	66,400
Asset Impairment Charges		$ 58,053	$ 21,931
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		5,108,530	6,802,560
Prior Period Reclassification Adjustment			$ 53,500