Note 13 - Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Deferred Tax Assets, Valuation Allowance	$ 573	$ 484	$ 5,153
Valuation Allowances and Reserves, Period Increase (Decrease)	89	(4,669)
Valuation Allowance, Deferred Tax Asset, Change in Amount		$ (3,110)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	34.00%	34.00%