Note 10 - Stock-Based Compensation Plans and Warrants (Detail) - Stock Option Activity (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2009
Outstanding Balance Shares	862,500	727,500	325,000
Outstanding Balance Weighted- Average Exercise Price (in Dollars per share)	$ 11.92	$ 11.86	$ 12.31
Outstanding Balance Average Remaining Contractual Term	6 years 6 months
Outstanding Balance Aggregate Intrinsic Value (in Dollars)	$ 7,516
Exercisable at December 31, 2012	817,502
Exercisable at December 31, 2012 (in Dollars per share)	$ 11.91
Exercisable at December 31, 2012	5 years 109 days
Exercisable at December 31, 2012 (in Dollars)	7,147
Outstanding Balance Shares	862,500	727,500	325,000
Outstanding Balance Weighted- Average Exercise Price (in Dollars per share)	$ 11.92	$ 11.86	$ 12.31
Outstanding Balance Average Remaining Contractual Term	5 years 6 months
Outstanding Balance Aggregate Intrinsic Value (in Dollars)	$ 7,499