Note 20 - Concentration of Risk (Details Textual)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Number of Major Customers	1	1
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk, Percentage	21.00%	10.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Major Customers	3		2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 1 [Member]
Concentration Risk, Percentage	18.00%		22.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 2 [Member]
Concentration Risk, Percentage	16.00%		14.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 3 [Member]
Concentration Risk, Percentage	12.00%
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member]
Number of Major Customers	2	2
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier 1 [Member]
Concentration Risk, Percentage	68.00%	59.00%
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier 2 [Member]
Concentration Risk, Percentage	23.00%	16.00%