Note 12 - Geographic Data (Detail) - Operating income (loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Operating income (loss)	$ 781	$ 555	$ 1,252	$ 954
United States [Member]
Operating income (loss)	990	626	1,321	1,218
International [Member]
Operating income (loss)	$ (209)	$ (71)	$ (69)	$ (264)