Note 7 - Income Taxes - Income Before Income Taxes Attributable to Domestic and Foreign Operations (Details) - USD ($) $ in Thousands		2 Months Ended	10 Months Ended	12 Months Ended
		Dec. 31, 2017	Nov. 14, 2017	Dec. 31, 2016	Dec. 31, 2015
U.S. (a)	[1]	$ (3,688)
Foreign (b)	[2]	(3,105)
		$ (6,793)
Predecessor [Member]
U.S. (a)	[1]		$ 4,835	$ (133,572)	$ (198,175)
Foreign (b)	[2]		(443,998)	(108,865)	(22,693)
			$ (439,163)	$ (242,437)	$ (220,868)

[1] Included in this amount is $228.9 million of adjustments to domestic assets and liabilities as a result of the application of the guidance in ASC 805.

[2] Included in this amount is $405.1 million of adjustments to foreign assets and liabilities as a result of the application of the guidance in ASC 805.