Note 12 - Other Financial Information (Detail)	3 Months Ended								12 Months Ended				12 Months Ended								48 Months Ended	24 Months Ended
	Dec. 31, 2012 USD ($)	Sep. 30, 2012 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Sep. 30, 2011 USD ($)	Jun. 30, 2011 USD ($)	Mar. 31, 2011 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 EUR (€)	Dec. 31, 2012 Alcatel-Lucent [Member] USD ($)	Dec. 31, 2011 Alcatel-Lucent [Member] USD ($)	Dec. 31, 2010 Alcatel-Lucent [Member] USD ($)	Dec. 31, 2012 Nokia Siemens Networks [Member] USD ($)	Dec. 31, 2011 Nokia Siemens Networks [Member] USD ($)	Dec. 31, 2010 Nokia Siemens Networks [Member] USD ($)	Dec. 31, 2012 Networks Engines [Member] USD ($)	Dec. 31, 2012 Genband [Member] USD ($)	Dec. 31, 2012 Customer Concentration Risk [Member]	Dec. 31, 2012 Accounts Receivable [Member]
Revenues	$ 3,204,000	$ 3,167,000	$ 3,470,000	$ 4,014,000	$ 3,607,000	$ 5,521,000	$ 6,177,000	$ 6,688,000	$ 13,855,000	$ 21,993,000	$ 18,207,000		$ 3,800,000	$ 4,600,000	$ 5,100,000	$ 1,900,000	$ 6,700,000	$ 2,900,000
Entity-Wide Revenue, Major Customer, Percentage													27.00%	21.00%	28.00%	13.00%	31.00%	16.00%
Concentration Risk, Percentage																					10.00%	10.00%
Receivables from Customers													387,000	786,000		721,000	734,000		401,000	312,000
Purchase Obligation	50,000								50,000
Estimated Litigation Liability (in Euro)	4,100,000								4,100,000			3,100,000
Estimated Litigation Liability	$ 4,100,000								$ 4,100,000			€ 3,100,000