Note 5 - Goodwill and Intangible Assets (Detail) - Estimated Amortization Expense for Future Years (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
2013	$ 253
2014	105
2015	50
2016	50
2017	50
2018 and thereafter	100
Total amortization expense	$ 608	$ 1,027