Note 11 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		2 Months Ended	10 Months Ended	12 Months Ended
	May 15, 2017	Dec. 31, 2017	Nov. 14, 2017	Dec. 31, 2016	Dec. 31, 2015	May 17, 2017	Dec. 31, 2012
Reorganized Equity, Equity Warrants Issued	811,000
Common Stock, Shares Authorized		25,000,000
Aggregate Ownership Percentage of Common Stock to Non-U.S. Citizens, Permitted Percentage	24.00%
Reorangized Equity, Equity Warrant, Exercise Price	$ 100
Proceeds from Issuance of Common Stock
Preferred Stock, Shares Authorized		5,000,000
Preferred Stock, Par or Stated Value Per Share		$ 0.01
Preferred Stock, Shares Issued		0
Redemption Notes [Member]
Debt Instrument, Term	10 years
Redemption Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.01
Noteholder Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 0.01
Equity Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 100
Predecessor [Member]
Reorganized Equity, Common Stock Issued	2,267,408					2,267,408
Reorganized Equity, Equity Warrants Issued	810,811
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
Reorganized Equity, Noteholder Warrant, Exercised During Period		0
Reorangized Equity, Equity Warrant, Exercise Price	$ 100
Reorganized Equity, Equity Warrant, Exercised During Period		0
Proceeds from Issuance of Common Stock				$ 380	$ 827
Stock Issued During Period, Shares, New Issues	100,000
Preferred Stock, Shares Authorized				2,000,000
Preferred Stock, Par or Stated Value Per Share				$ 0.01
Preferred Stock, Shares Issued				0
Predecessor [Member] | Noteholder Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,956,859
Reorganized Equity, Warrant Term	25 years
Predecessor [Member] | Equity Warrants [Member]
Reorganized Equity, Warrant Term	7 years
Common Class A [Member] | Predecessor [Member]
Reorganized Equity, Common Stock Issued	75,000
Common Stock, Shares Authorized				60,000,000
Proceeds from Issuance of Common Stock			0	$ 400	$ 700
Stock Issued During Period, Shares, New Issues				165,849	101,179
Stock Repurchase Program, Authorized Amount			$ 0	$ 0	$ 0		$ 100,000