Note 12 - Geographic Data (Detail) - Operating income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating income (loss)	$ 358	$ 470
United States [Member]
Operating income (loss)	306	332
International [Member]
Operating income (loss)	$ 52	$ 138