Note 8 - Loans and Allowance for Loan Losses (Details) - Activity In The Allowance For Loan Losses (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended								3 Months Ended		6 Months Ended								3 Months Ended		6 Months Ended								3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013 Real Estate Loans [Member] Beginning [Member]	Dec. 31, 2012 Real Estate Loans [Member] Beginning [Member]	Mar. 31, 2012 Real Estate Loans [Member] Beginning [Member]	Dec. 31, 2011 Real Estate Loans [Member] Beginning [Member]	Jun. 30, 2013 Real Estate Loans [Member] Ending [Member]	Jun. 30, 2012 Real Estate Loans [Member] Ending [Member]	Jun. 30, 2013 Real Estate Loans [Member]	Jun. 30, 2012 Real Estate Loans [Member]	Jun. 30, 2013 Real Estate Loans [Member]	Jun. 30, 2012 Real Estate Loans [Member]	Mar. 31, 2013 Commercial Portfolio Segment [Member] Beginning [Member]	Dec. 31, 2012 Commercial Portfolio Segment [Member] Beginning [Member]	Mar. 31, 2012 Commercial Portfolio Segment [Member] Beginning [Member]	Dec. 31, 2011 Commercial Portfolio Segment [Member] Beginning [Member]	Jun. 30, 2013 Commercial Portfolio Segment [Member] Ending [Member]	Jun. 30, 2012 Commercial Portfolio Segment [Member] Ending [Member]	Jun. 30, 2013 Commercial Portfolio Segment [Member]	Jun. 30, 2012 Commercial Portfolio Segment [Member]	Jun. 30, 2013 Commercial Portfolio Segment [Member]	Jun. 30, 2012 Commercial Portfolio Segment [Member]	Mar. 31, 2013 Consumer Portfolio Segment [Member] Beginning [Member]	Dec. 31, 2012 Consumer Portfolio Segment [Member] Beginning [Member]	Mar. 31, 2012 Consumer Portfolio Segment [Member] Beginning [Member]	Dec. 31, 2011 Consumer Portfolio Segment [Member] Beginning [Member]	Jun. 30, 2013 Consumer Portfolio Segment [Member] Ending [Member]	Jun. 30, 2012 Consumer Portfolio Segment [Member] Ending [Member]	Jun. 30, 2013 Consumer Portfolio Segment [Member]	Jun. 30, 2012 Consumer Portfolio Segment [Member]	Jun. 30, 2013 Consumer Portfolio Segment [Member]	Jun. 30, 2012 Consumer Portfolio Segment [Member]	Mar. 31, 2013 Beginning [Member]	Dec. 31, 2012 Beginning [Member]	Mar. 31, 2012 Beginning [Member]	Dec. 31, 2011 Beginning [Member]	Jun. 30, 2013 Ending [Member]	Jun. 30, 2012 Ending [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at Beginning of Period					$ 21,402	$ 22,254	$ 23,990	$ 23,538	$ 20,240	$ 24,221			$ 22,254		$ 1,558	$ 1,513	$ 2,238	$ 3,508	$ 2,177	$ 2,137			$ 1,513		$ 603	$ 678	$ 825	$ 1,218	$ 526	$ 755			$ 678		$ 23,563	$ 24,445	$ 27,053	$ 28,264	$ 22,943	$ 27,113
Provision for loan losses	(362)	1,341	(994)	2,318							(848)	1,437	(1,500)	4,030							624	(85)	617	(1,381)							(138)	(11)	(111)	(331)
Recoveries	176	153	431	435							48	75	184	202							14	22	97	121							114	56	150	112
Loans charged off	(434)	(1,434)	(939)	(3,904)							(362)	(1,281)	(698)	(3,549)							(19)	(38)	(50)	(111)							(53)	(115)	(191)	(244)
Balance at End of Period					$ 21,402	$ 22,254	$ 23,990	$ 23,538	$ 20,240	$ 24,221	$ 20,240		$ 20,240		$ 1,558	$ 1,513	$ 2,238	$ 3,508	$ 2,177	$ 2,137	$ 2,177		$ 2,177		$ 603	$ 678	$ 825	$ 1,218	$ 526	$ 755	$ 526		$ 526		$ 23,563	$ 24,445	$ 27,053	$ 28,264	$ 22,943	$ 27,113