Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	$ 17,997	$ 21,340
Provision for loan losses	0	1,278
Loans charged off	(1,247)	(1,955)
Recoveries	229	185
Ending balance	16,979	20,848
Commercial and Industrial [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	1,812	1,896
Provision for loan losses	303	74
Loans charged off	(309)	(50)
Recoveries	22	18
Ending balance	1,828	1,938
Commercial Real Estate Portfolio Segment [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	9,308	11,565
Provision for loan losses	72	775
Loans charged off	(440)	(927)
Recoveries	77	61
Ending balance	9,017	11,474
First Lien Residential Mortgage Loans [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	5,161	5,656
Provision for loan losses	(316)	397
Loans charged off	(410)	(770)
Recoveries	98	31
Ending balance	4,533	5,314
Junior Lein Residential Mortgage Loans [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	608	555
Provision for loan losses	(53)	46
Loans charged off	(12)	(55)
Recoveries	0	0
Ending balance	543	546
Consumer Portfolio Segment [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	540	805
Provision for loan losses	13	(57)
Loans charged off	(76)	(153)
Recoveries	32	75
Ending balance	509	670
Unallocated Financing Receivables [Member]
Note 3 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables [Line Items]
Beginning balance	568	863
Provision for loan losses	(19)	43
Loans charged off	0	0
Recoveries	0	0
Ending balance	$ 549	$ 906