Note 15 - Supplemental Cash Flow Disclosures - Schedule of Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash paid for interest	$ (926)	$ (19,153)	$ (64,950)
Cash refunded from income taxes	10,561	14,943	13,815
Cash paid for reorganization items
Non-cash investing and financing activity:
Change in accrued capital expenditures	202
Non-cash consideration for business acquisition	$ 138,166
Predecessor [Member]
Cash paid for reorganization items		(24,719)
Non-cash investing and financing activity:
Change in accrued capital expenditures		(3,182)	(42,793)
Non-cash consideration for business acquisition			$ 735,125