Note 1 - Summary of Significant Accounting Policies (Details) - Accounts Receivable and Allowance for Doubtful Accounts, Activity (Allowance for Doubtful Accounts [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning	$ 17	$ 18	$ 23
Charged to Expense	13	1	0
(Write-offs) Net of Recoveries	(13)	(2)	(5)
Balance, Ending	$ 17	$ 17	$ 18