Note 1 - Organization and Significant Accounting Policies (Detail) - Allowance for Doubtful Accounts (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Including Foreign Currency Translation [Member]	Dec. 31, 2011 Including Foreign Currency Translation [Member]	Dec. 31, 2010 Including Foreign Currency Translation [Member]	Dec. 31, 2012 Beginning of Period [Member]	Dec. 31, 2011 Beginning of Period [Member]	Dec. 31, 2009 Beginning of Period [Member]	Dec. 31, 2012 End of Period [Member]	Dec. 31, 2011 End of Period [Member]	Dec. 31, 2009 End of Period [Member]
Allowance for Doubtful Accounts Balance							$ 430	$ 82	$ 70	$ 460	$ 430	$ 82
Provision Charged to Expense	26	348	12	246	510	50
Bad Debt Write off / Recoveries	(216)	(162)	(38)
Allowance for Doubtful Accounts Balance							$ 430	$ 82	$ 70	$ 460	$ 430	$ 82