Note 13 - Segment Data (Details) - Additional Information Regarding Revenue by Product Line (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue from External Customer [Line Items]
Revenues	$ 4,322	$ 4,168	$ 3,818	$ 3,280	$ 3,204	$ 3,167	$ 3,470	$ 4,014	$ 15,588	$ 13,855	$ 21,993
Operating Segments [Member] | Telecomunications [Member]
Revenue from External Customer [Line Items]
Revenues									11,077	10,082	17,771
Operating Segments [Member] | Services [Member]
Revenue from External Customer [Line Items]
Revenues									4,332	3,246	2,469
Operating Segments [Member] | Enterprise [Member]
Revenue from External Customer [Line Items]
Revenues									23	393	1,591
Operating Segments [Member] | Other Segments [Member]
Revenue from External Customer [Line Items]
Revenues									$ 156	$ 134	$ 162