Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Allowance for Loan Losses (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	$ 9,090	$ 21,941	$ 11,401	$ 21,608
Loans receivable at December 31, 2013:
Individually reviewed for impairment					14,453	21,276
Collectively reviewed for impairment					361,926	374,773
Ending balance	376,379		376,379		376,379	396,049
Provision for losses	(2,178)	(520)	(3,788)	(520)
Charge-offs	(121)	(1,383)	(1,089)	(1,767)
Recoveries	1,905	321	2,172	1,038
Allocated to:
Specific reserves	2,354		2,354			3,778
General reserves	6,342		6,342			7,623
Balance	8,696	20,359	8,696	20,359
1-4 Family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,712	2,352	1,628	2,821
Loans receivable at December 31, 2013:
Individually reviewed for impairment					2,338	1,888
Collectively reviewed for impairment					69,252	74,579
Ending balance					71,590	76,467
Provision for losses	465	(293)	549	(575)
Charge-offs	(92)	(13)	(92)	(200)
Recoveries	0	13	0	13
Allocated to:
Specific reserves	761		761			404
General reserves	1,324		1,324			1,224
Balance	2,085	2,059	2,085	2,059
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	4,543	14,581	6,458	13,588
Loans receivable at December 31, 2013:
Individually reviewed for impairment					9,804	17,190
Collectively reviewed for impairment					178,211	177,260
Ending balance					188,015	194,450
Provision for losses	(2,409)	85	(3,602)	866
Charge-offs	0	(759)	(936)	(910)
Recoveries	1,689	182	1,903	545
Allocated to:
Specific reserves	387		387			2,403
General reserves	3,436		3,436			4,055
Balance	3,823	14,089	3,823	14,089
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,186	1,344	1,106	1,146
Loans receivable at December 31, 2013:
Individually reviewed for impairment					947	917
Collectively reviewed for impairment					53,884	52,506
Ending balance					54,831	53,423
Provision for losses	(1)	133	99	315
Charge-offs	(29)	(55)	(60)	(101)
Recoveries	8	9	19	71
Allocated to:
Specific reserves	449		449			382
General reserves	715		715			724
Balance	1,164	1,431	1,164	1,431
Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,649	3,664	2,209	4,053
Loans receivable at December 31, 2013:
Individually reviewed for impairment					1,364	1,281
Collectively reviewed for impairment					60,579	70,428
Ending balance					61,943	71,709
Provision for losses	(233)	(445)	(834)	(1,126)
Charge-offs	0	(556)	(1)	(556)
Recoveries	208	117	250	409
Allocated to:
Specific reserves	757		757			589
General reserves	867		867			1,620
Balance	$ 1,624	$ 2,780	$ 1,624	$ 2,780