Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Securities Excluded From Computation of Basic and Diluted Earnings Per Share (Details) - shares shares in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restricted shares (in shares)		563		479
Potentially dilutive securities excluded as anti-dilutive (in shares)		802		689
Employee Stock Option [Member]
Potentially dilutive securities excluded as anti-dilutive (in shares)		256		222
Restricted Stock [Member]
Potentially dilutive securities excluded as anti-dilutive (in shares)		546		467
Predecessor [Member]
Restricted shares (in shares)	898		970		1,732
Potentially dilutive securities excluded as anti-dilutive (in shares)	5,314		5,986		6,597
Predecessor [Member] | Employee Stock Option [Member]
Potentially dilutive securities excluded as anti-dilutive (in shares)	4,416		5,016		4,873
Predecessor [Member] | Restricted Stock [Member]
Potentially dilutive securities excluded as anti-dilutive (in shares)	898		970		1,724