Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Allowance for Loan Losses (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	$ 8,696	$ 20,359	$ 11,401	$ 21,608
Loans receivable at December 31, 2013:
Individually reviewed for impairment	12,766		12,766		21,276
Collectively reviewed for impairment	360,684		360,684		374,773
Ending balance	373,450		373,450		396,049
Provision for losses	(989)	(4,330)	(4,777)	(4,850)
Charge-offs	(70)	(426)	(1,159)	(2,192)
Recoveries	286	902	2,458	1,939
Allocated to:
Specific reserves	1,272		1,272		3,778
General reserves	6,651		6,651		7,623
Balance	7,923	16,505	7,923	16,505
1-4 Family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	2,085	2,059	1,628	2,821
Loans receivable at December 31, 2013:
Individually reviewed for impairment	1,341		1,341		1,888
Collectively reviewed for impairment	68,012		68,012		74,579
Ending balance	69,353		69,353		76,467
Provision for losses	(489)	(675)	60	(1,250)
Charge-offs	0	0	(92)	(200)
Recoveries	0	0	0	13
Allocated to:
Specific reserves	277		277		404
General reserves	1,319		1,319		1,224
Balance	1,596	1,384	1,596	1,384
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	3,823	14,089	6,458	13,588
Loans receivable at December 31, 2013:
Individually reviewed for impairment	9,714		9,714		17,190
Collectively reviewed for impairment	178,421		178,421		177,260
Ending balance	188,135		188,135		194,450
Provision for losses	14	(3,512)	(3,588)	(2,646)
Charge-offs	0	(2)	(936)	(911)
Recoveries	229	711	2,132	1,255
Allocated to:
Specific reserves	384		384		2,403
General reserves	3,682		3,682		4,055
Balance	4,066	11,286	4,066	11,286
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,164	1,431	1,106	1,146
Loans receivable at December 31, 2013:
Individually reviewed for impairment	942		942		917
Collectively reviewed for impairment	53,867		53,867		52,506
Ending balance	54,809		54,809		53,423
Provision for losses	(16)	(58)	83	256
Charge-offs	(15)	(374)	(75)	(475)
Recoveries	10	14	29	86
Allocated to:
Specific reserves	431		431		382
General reserves	712		712		724
Balance	1,143	1,013	1,143	1,013
Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,624	2,780	2,209	4,053
Loans receivable at December 31, 2013:
Individually reviewed for impairment	769		769		1,281
Collectively reviewed for impairment	60,384		60,384		70,428
Ending balance	61,153		61,153		71,709
Provision for losses	(498)	(85)	(1,332)	(1,210)
Charge-offs	(55)	(50)	(56)	(606)
Recoveries	47	177	297	585
Allocated to:
Specific reserves	180		180		589
General reserves	938		938		1,620
Balance	$ 1,118	$ 2,822	$ 1,118	$ 2,822