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		9 Months Ended			12 Months Ended
	Jan. 01, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Net income (loss)		$ 10,484		$ (34,539)	$ (34,539)
Weighted average common shares outstanding (in shares)		62,697		60,188
Weighted average common shares outstanding and assumed conversions (in shares)		62,704		60,188
Basic (in dollars per share)		$ 0.17		$ (0.57)
Diluted (in dollars per share)		$ 0.17		$ (0.57)
Employee Stock Option [Member]
Potentially dilutive common shares (in shares)
Restricted Stock [Member]
Potentially dilutive common shares (in shares)		7
Predecessor [Member]
Net income (loss)	$ 298,582		$ (106,390)			$ (825,921)	$ (944,289)
Weighted average common shares outstanding (in shares)	118,633		118,626			118,196
Weighted average common shares outstanding and assumed conversions (in shares)	118,633		118,626			118,196
Basic (in dollars per share)	$ 2.52		$ (0.90)			$ (6.99)
Diluted (in dollars per share)	$ 2.52		$ (0.90)			$ (6.99)
Predecessor [Member] | Employee Stock Option [Member]
Potentially dilutive common shares (in shares)
Predecessor [Member] | Restricted Stock [Member]
Potentially dilutive common shares (in shares)