Note 10 - Stock-Based Compensation Plans and Warrants (Detail) - Stock Option Transactions (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Outstanding	862,500	862,500	727,500	325,000
Outstanding - weighted average exercise price (in Dollars per share)	$ 11.92	$ 11.92	$ 11.86	$ 12.31
Granted	0	135,000	402,500
Granted - weighted average exercise price (in Dollars per share)		$ 12.23	$ 11.51
Expired or canceled	0	0
Expired or canceled - weighted average exercise price (in Dollars per share)	$ 0	$ 0
Exercised	0	0	0
Exercised - weighted average exercise price (in Dollars per share)	$ 0	$ 0	$ 0
Options exercisable at December 31, 2012	817,502
Options exercisable at December 31, 2012 (in Dollars per share)	$ 11.91
Weighted-average years of remaining contractual life of options outstanding at December 31, 2012	5 years 6 months