Note 14 - Segment Data (Detail) - Additional Information Regarding Revenue by Product Line (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues	$ 3,204	$ 3,167	$ 3,470	$ 4,014	$ 3,607	$ 5,521	$ 6,177	$ 6,688	$ 13,855	$ 21,993	$ 18,207
Telecomunications [Member]
Revenues									10,082	17,771	15,104
Services [Member]
Revenues									3,246	2,469	1,392
Enterprise [Member]
Revenues									393	1,591	1,553
All Other Segments [Member]
Revenues									$ 134	$ 162	$ 158