Note 10 - Segment Information (Detail) - Geographic Revenue Related to North America and Foreign Regions (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues:
Revenues	$ 3,470	$ 6,177	$ 7,484	$ 12,865
North America [Member]
Revenues:
Revenues	2,098	2,155	3,897	3,853
Europe [Member]
Revenues:
Revenues	689	1,166	1,341	4,129
Pacific Rim [Member]
Revenues:
Revenues	$ 683	$ 2,856	$ 2,246	$ 4,883