Note 7 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)	2 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2017	Nov. 14, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
U.S. federal statutory income tax rate	(35.00%)		(35.00%)
Effect of foreign operations	16.00%
US state income taxes net of Federal benefit	14.50%
Foreign earnings repatriation
U.S. foreign tax credit
Valuation allowance	76.50%
Gain on extinguishment of debt
Fresh-Start Reporting Adjustments
Transaction Costs
Effects of U.S. Tax Reform	(224.10%)
Other	0.40%
Total	(151.70%)
Predecessor [Member]
U.S. federal statutory income tax rate		(35.00%)		(35.00%)	(35.00%)
Effect of foreign operations		3.10%		14.50%	2.50%
US state income taxes net of Federal benefit		(0.10%)		(1.10%)	(1.70%)
Foreign earnings repatriation		(3.10%)		6.70%	34.40%
U.S. foreign tax credit		(1.00%)		(2.70%)	(7.80%)
Valuation allowance		21.70%		1.80%	5.10%
Gain on extinguishment of debt		(27.30%)
Fresh-Start Reporting Adjustments		27.10%
Transaction Costs		2.80%
Effects of U.S. Tax Reform
Other		2.90%		(0.50%)	(0.10%)
Total		(8.70%)		(16.30%)	(2.60%)