Note 20 - Concentration of Risk (Details Textual)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Number of Customers	1	0	1	0
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk, Percentage	21.00%		21.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Customers			3		2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 1 [Member]
Concentration Risk, Percentage			28.00%		22.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 2 [Member]
Concentration Risk, Percentage			17.00%		14.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 3 [Member]
Concentration Risk, Percentage			11.00%
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member]
Number of Suppliers	2	2	2	2
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier 1 [Member]
Concentration Risk, Percentage	81.00%	60.00%	75.00%	60.00%
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier 2 [Member]
Concentration Risk, Percentage	11.00%	10.00%	16.00%	12.00%