Note 8 - Income Taxes (Details) - Summary of Unrecognized Tax Benefits (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of Unrecognized Tax Benefits [Abstract]
Balance at beginning of period	$ 880	$ 1,597	$ 2,342
Balance at end of period	782	880	1,597
Reduction in benefit from lapse in statute of limitations	$ (98)	$ (717)	$ (745)