Note 6 - Loans (Details) - Allowance for Credit Losses and Recorded Investment in Financing Receivables (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Allowance for credit losses:
Beginning balance	$ 14,172	$ 11,103
Ending balance	9,882	14,172
Ending balance: individually evaluated for impairment	1,002	4,994
Ending balance: collectively evaluated for impairment	8,880	9,178
Charge offs	(6,359)	(2,770)
Recoveries	619	3,089
Provision	1,450	2,750
Financing receivables
Ending balance	619,418	597,995
Ending balance individually evaluated for impairment	35,456	42,141
Ending balance collectively evaluated for impairment	583,962	555,854
Commercial Portfolio Segment [Member]
Allowance for credit losses:
Beginning balance	7,057	4,168
Ending balance	3,334	7,057
Ending balance: individually evaluated for impairment	4	2,988
Ending balance: collectively evaluated for impairment	3,330	4,069
Charge offs	(3,685)	(882)
Recoveries	455	58
Provision	(493)	3,713
Financing receivables
Ending balance	168,354	170,429
Ending balance individually evaluated for impairment	4,388	6,590
Ending balance collectively evaluated for impairment	163,966	163,839
Commercial Real Estate Portfolio Segment [Member]
Allowance for credit losses:
Beginning balance	2,784	2,783
Ending balance	3,867	2,784
Ending balance: individually evaluated for impairment	208	814
Ending balance: collectively evaluated for impairment	3,659	1,970
Charge offs	(2,406)	(230)
Recoveries		2,483
Provision	3,489	(2,252)
Financing receivables
Ending balance	318,188	307,905
Ending balance individually evaluated for impairment	17,677	21,747
Ending balance collectively evaluated for impairment	300,511	286,158
Consumer Portfolio Segment [Member]
Allowance for credit losses:
Beginning balance	35	28
Ending balance	238	35
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	238	35
Charge offs	0	(25)
Recoveries	0	1
Provision	203	31
Financing receivables
Ending balance	20,245	3,508
Ending balance individually evaluated for impairment	87	0
Ending balance collectively evaluated for impairment	20,158	3,508
Residential Portfolio Segment [Member]
Allowance for credit losses:
Beginning balance	2,493	3,335
Ending balance	2,333	2,493
Ending balance: individually evaluated for impairment	790	1,192
Ending balance: collectively evaluated for impairment	1,543	1,301
Charge offs	(268)	(1,633)
Recoveries	164	547
Provision	(56)	244
Financing receivables
Ending balance	112,631	116,153
Ending balance individually evaluated for impairment	13,304	13,804
Ending balance collectively evaluated for impairment	99,327	102,349
Unallocated Financing Receivables [Member]
Allowance for credit losses:
Beginning balance	1,803	789
Ending balance	110	1,803
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	110	1,803
Charge offs	0	0
Recoveries	0	0
Provision	(1,693)	1,014
Financing receivables
Ending balance	0	0
Ending balance individually evaluated for impairment	0	0
Ending balance collectively evaluated for impairment	$ 0	$ 0