Note 7 - Loans (Details) - Troubled Debt Restructurings Modified (USD $) In Thousands, unless otherwise specified			6 Months Ended							3 Months Ended	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Commercial Loans [Member] Accruing Troubled Debt Restructuring [Member]	Jun. 30, 2013 Commercial Loans [Member] Accruing Troubled Debt Restructuring [Member]	Jun. 30, 2014 Residential Mortgage Loans [Member] Accruing Troubled Debt Restructuring [Member]	Jun. 30, 2013 Residential Mortgage Loans [Member] Accruing Troubled Debt Restructuring [Member]	Jun. 30, 2014 Total [Member] Accruing Troubled Debt Restructuring [Member]	Jun. 30, 2013 Total [Member] Accruing Troubled Debt Restructuring [Member]	Jun. 30, 2013 Commercial Mortgage Loans [Member] Accruing Troubled Debt Restructuring [Member]	Jun. 30, 2013 Accruing Troubled Debt Restructuring [Member]	Jun. 30, 2013 Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructurings Modified [Line Items]
No. of Loans			3	4	3	10	6	16	2
Pre-Modification Recorded Investment			$ 8,490	$ 4,006	$ 1,393	$ 3,459	$ 9,883	$ 8,640	$ 1,175
Post-Modification Recorded Investment			8,490	4,006	1,393	3,381	9,883	8,562	1,175
Charge-offs				0	0	78		78		(78)	(78)
Specific Reserve	$ 9,609	$ 13,284	$ 20	$ 55	$ 32	$ 155	$ 52	$ 219	$ 9