Note 7 - Loans (Details) - Activity Within the Troubled Debt Resturing Loans (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Activity Within the Troubled Debt Resturing Loans [Line Items]
New restructurings	$ 7,375	$ 4,816
Restructured loans restored to accrual status	962	630
Payments	(7,012)	(17,892)
Restructured loans placed on nonaccrual		(2,034)
Accruing Troubled Debt Restructuring [Member] | Beginning of Period [Member]
Note 7 - Loans (Details) - Activity Within the Troubled Debt Resturing Loans [Line Items]
Balance at	117,597	144,695
Balance at	117,597	144,695
Accruing Troubled Debt Restructuring [Member] | End of Period [Member]
Note 7 - Loans (Details) - Activity Within the Troubled Debt Resturing Loans [Line Items]
Balance at	118,922	130,215
Balance at	118,922	130,215
Non Accruing Troubled Debt Restructuring Member
Note 7 - Loans (Details) - Activity Within the Troubled Debt Resturing Loans [Line Items]
New restructurings	1,539	2,062
Restructured loans restored to accrual status	(962)	(630)
Payments	(1,545)	(640)
Restructured loans placed on nonaccrual		2,034
Charge-offs	(4)	(679)
Non Accruing Troubled Debt Restructuring Member | Beginning of Period [Member]
Note 7 - Loans (Details) - Activity Within the Troubled Debt Resturing Loans [Line Items]
Balance at	38,769	47,731
Balance at	38,769	47,731
Non Accruing Troubled Debt Restructuring Member | End of Period [Member]
Note 7 - Loans (Details) - Activity Within the Troubled Debt Resturing Loans [Line Items]
Balance at	37,797	49,878
Balance at	$ 37,797	$ 49,878