Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 01, 2017	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Net income (loss)		$ (32,301)
Weighted average common shares outstanding (in shares)		55,557
Weighted average common shares outstanding and assumed conversions (in shares)		55,557
Basic (in dollars per share)		$ (0.58)
Diluted (in dollars per share)		$ (0.58)
Employee Stock Option [Member]
Potentially dilutive common shares (in shares)
Restricted Stock [Member]
Weighted average common shares outstanding (in shares)
Predecessor [Member]
Net income (loss)	$ 298,582		$ (428,412)	$ (944,289)
Weighted average common shares outstanding (in shares)	118,633		117,533
Weighted average common shares outstanding and assumed conversions (in shares)	118,633		117,533
Basic (in dollars per share)	$ 2.52		$ (3.65)
Diluted (in dollars per share)	$ 2.52		$ (3.65)
Predecessor [Member] | Employee Stock Option [Member]
Potentially dilutive common shares (in shares)
Predecessor [Member] | Restricted Stock [Member]
Weighted average common shares outstanding (in shares)