Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	$ 20,848	$ 21,220	$ 21,340	$ 21,019
Provision for loan losses	552	2,494	1,830	4,988
Loans charged off	(1,368)	(2,422)	(3,323)	(4,917)
Recoveries	207	230	392	432
Ending balance	20,239	21,522	20,239	21,522
Commercial and Industrial [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	1,938	2,369	1,896	2,485
Provision for loan losses	4	317	78	320
Loans charged off	(156)	(297)	(206)	(426)
Recoveries	35	15	53	25
Ending balance	1,821	2,404	1,821	2,404
Commercial Real Estate Loans [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	11,474	11,767	11,565	11,534
Provision for loan losses	(526)	720	248	2,246
Loans charged off	(737)	(1,308)	(1,663)	(2,649)
Recoveries	26	36	87	84
Ending balance	10,237	11,215	10,237	11,215
First Lien Residential Mortgage Loans [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	5,314	5,563	5,656	5,393
Provision for loan losses	1,156	581	1,554	1,288
Loans charged off	(212)	(572)	(983)	(1,155)
Recoveries	29	71	60	117
Ending balance	6,287	5,643	6,287	5,643
Junior Lein Residential Mortgage Loans [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	546	532	555	505
Provision for loan losses	151	100	197	321
Loans charged off	(128)	(109)	(183)	(303)
Recoveries	0	0	0	0
Ending balance	569	523	569	523
Consumer Loans [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	670	945	805	931
Provision for loan losses	(73)	(66)	(130)	98
Loans charged off	(135)	(136)	(288)	(384)
Recoveries	117	108	192	206
Ending balance	579	851	579	851
Unallocated Financing Receivables [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	906	44	863	171
Provision for loan losses	(160)	842	(117)	715
Loans charged off	0	0	0	0
Recoveries	0	0	0	0
Ending balance	$ 746	$ 886	$ 746	$ 886