Note 18 - Acquisition of Business - Summary of Purchase Price (Details) - USD ($)		12 Months Ended
	Mar. 08, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash consideration at closing, net of cash acquired		$ 15,161,000
BAMKO [Member]
Cash consideration at closing, net of cash acquired	$ 15,161,000
Restricted shares of Superior common stock issued	4,558,000
Contingent consideration	5,205,000
Total Considerations	$ 24,924,000