Note 11 - Concentration of Credit Risk (Details) - Concentration of Credit Risk (Customer Concentration Risk [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
GADeG [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	5.10%	8.30%
GADeG [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	0.00%	0.00%
Ericsson [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	6.20%	8.20%
Ericsson [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	3.40%	19.00%
GE [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	7.60%	8.20%
GE [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	14.20%	13.60%
KitASP [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	2.60%	7.80%
KitASP [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	0.00%	0.00%
IDS LLC [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	5.90%	4.50%
IDS LLC [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	5.20%	1.60%
Alcatel [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	8.50%	5.80%
Alcatel [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	19.90%	15.60%
Elosoft [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	6.70%	5.60%
Elosoft [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	13.30%	8.60%
Sales [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	42.60%	48.40%
Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risks by Customer	56.00%	58.40%