Note 13 - Segment Information (Details)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Note 13 - Segment Information (Details) [Line Items]
Number of Reportable Segments	3
Sales Revenue, Segment [Member] | Product Concentration Risk [Member] | Mobile [Member]
Note 13 - Segment Information (Details) [Line Items]
Concentration Risk, Percentage	14.00%	0.00%
Telephony [Member] | Sales Revenue, Segment [Member] | Product Concentration Risk [Member] | Home [Member]
Note 13 - Segment Information (Details) [Line Items]
Concentration Risk, Percentage	54.00%	76.00%
Gateway [Member] | Sales Revenue, Segment [Member] | Product Concentration Risk [Member] | Home [Member]
Note 13 - Segment Information (Details) [Line Items]
Concentration Risk, Percentage	10.00%	13.00%
VoIP [Member] | Sales Revenue, Segment [Member] | Product Concentration Risk [Member] | Office [Member]
Note 13 - Segment Information (Details) [Line Items]
Concentration Risk, Percentage	18.00%	10.00%