Note 2 - Emergence From Bankruptcy Proceedings and Fresh Start Accounting (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	May 15, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Nov. 14, 2017	May 17, 2017
Rights Offering, Percentage of Common Stock Available for Purchase	60.00%
Rights Offering, Backstopped Commitment Premiums Paid, Percent	6.00%
Rights Offering, Reorganized Equity Used for Commitment Premium, Percent	3.60%
Stock Issued During Period, Shares, Rights Offering	4,340,733
Class of Warrant or Right, Issued During Period, Rights Offering	1,659,269
Stock Issued During Period, Shares, Agreement to Backstop of the Rights Offering	360,000
Reorganized Equity, Noteholder Warrants Issued	3,000,000
Reorganized Equity, Pro Rata Per Share, Percent	0.75%
Reorangized Equity, Equity Warrant, Exercise Price	$ 100
Reorganized Equity, Pro Rata Warrants Per Share, Percent	7.50%
Reorganized Equity, Equity Warrants Issued	811,000
Reorganization Value					$ 335,862
Reorganized Equity, Noteholder Warrants, Per Share Value	$ 29.49
Reorganized Equity, Equity Warrants,Per Share Value	$ 1.27
Credit Facility Agreement [Member]
Debt Issuance Costs, Gross					9,600
DNB Capital LLC [Member] | Revolving Credit Facility [Member] | Credit Facility Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity					25,000
Debt Issuance Costs, Gross					1,800
Minimum [Member]
Reorganization Items, Discount, Percentage	18.00%
Maximum [Member]
Reorganization Items, Discount, Percentage	29.00%
Predecessor [Member]
Rights Offering Arrangement, Value	$ 125,000
Reorganized Equity, Aggregate Equity Issued to Noteholders, Percent	35.65%					35.65%
Reorganized Equity, Common Stock Issued	2,267,408					2,267,408
Reorganized Equity, Noteholder Warrants Issued	1,297,590					1,297,590
Maximum Aggregate Ownership Percentage of Common Stock to Non-U.S. Citizens	25.00%					25.00%
Reorganized Equity, Noteholder Warrants, Exercise Price	$ 0.01					$ 0.01
Reorangized Equity, Equity Warrant, Exercise Price	$ 100
Reorganized Equity, Equity Warrants Issued	810,811
Stock Issued During Period, Shares, New Issues	100,000
Predecessor [Member] | Common Class A [Member]
Reorganized Equity, Common Stock Issued	75,000
Stock Issued During Period, Shares, New Issues		165,849	101,179
Successor [Member]
Reorganization Value	$ 336,000
Stock Issued During Period, Shares, New Issues	7,000,000
Successor [Member] | Minimum [Member]
Reorganization Value	$ 300,000
Successor [Member] | Maximum [Member]
Reorganization Value	$ 400,000
Predecessor Noteholders [Member]
Stock Issued During Period, Shares, New Issues	6,900,000
Unsecured Senior Notes [Member] | Predecessor [Member]
Long-term Debt, Restructuring Support Agreement, Percentage of Aggregate Outstanding Principle	50.00%
Term Loan [Member] | Hayfin Capital Management LLP [Member] | Credit Facility Agreement [Member]
Long-term Debt				$ 100,000	100,000
Debt Issuance Costs, Gross					$ 7,200