Note 2 - Significant Accounting Policies (Details) - Concentration of Credit Risk - Customer Concentration Risk [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer	51.50%	43.20%	42.60%	42.90%
Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer	64.40%	81.50%	60.80%	72.90%
Alcatel [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer	7.60%	0.40%	4.10%	4.00%
Alcatel [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer	22.30%	15.00%	22.30%	15.00%
Centric [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer	5.30%	8.60%	3.60%	7.10%
Centric [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer	4.00%	8.20%	4.00%	8.20%
Elosoft [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer	15.60%	7.50%	13.10%	6.90%
Elosoft [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer	1.50%	10.20%	1.50%	10.20%
Ericsson [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer	0.00%	8.50%	0.30%	6.80%
Ericsson [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer	0.00%	16.40%	0.00%	16.40%
GE [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer	1.40%	12.10%	1.60%	12.50%
GE [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer	4.20%	23.10%	4.20%	23.10%
Raytheon [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer	19.40%	1.10%	16.60%	0.00%
Raytheon [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer	28.80%	0.00%	28.80%	0.00%
Thermo LabSystems [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer	2.20%	5.00%
Thermo LabSystems [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer	3.60%	8.60%
IDS LLC [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Customer			3.30%	5.60%
IDS LLC [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer			0.00%	0.00%