Note 7 - Loans (Details) - Troubled Debt Restructurings Modified (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Commercial Loans [Member] Accruing Troubled Debt Restructuring [Member]	Mar. 31, 2013 Commercial Loans [Member] Accruing Troubled Debt Restructuring [Member]	Mar. 31, 2014 Residential Mortgage Loans [Member] Accruing Troubled Debt Restructuring [Member]	Mar. 31, 2013 Residential Mortgage Loans [Member] Accruing Troubled Debt Restructuring [Member]	Mar. 31, 2014 Total [Member] Accruing Troubled Debt Restructuring [Member]	Mar. 31, 2013 Total [Member] Accruing Troubled Debt Restructuring [Member]	Mar. 31, 2013 Commercial Mortgage Loans [Member] Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructurings Modified [Line Items]
No. of Loans			2	4	2	6	4	12	2
Pre-Modification Recorded Investment			$ 8,243	$ 4,007	$ 671	$ 1,696	$ 8,914	$ 6,878	$ 1,175
Post-Modification Recorded Investment			8,243	4,007	671	1,696	8,914	6,878	1,175
Charge-offs				0		0
Specific Reserve	$ 14,495	$ 13,284	$ 1,035	$ 61	$ 36	$ 265	$ 1,071	$ 336	$ 10