Note 1 - Summary of Significant Accounting Policies (Details) - Summary of Allowance for Doubtful Accounts (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of Allowance for Doubtful Accounts [Abstract]
Beginning Balance	$ 1,729	$ 1,711	$ 1,537
Additional provisions to allowance	457	904	713
Write-offs and other deductions	(450)	(886)	(539)
Ending Balance	$ 1,736	$ 1,729	$ 1,711