Note 5 - Loans (Details) - Delinquencies by Class (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due		$ 7,580
Greater than 90 days past due on nonaccrual		15,848
Total past due		23,428
Current		715,630
Total loans	767,513	739,058
30-89 days past due	3,202	7,580
Greater than 90 days past due on nonaccrual	15,108	15,072
Total past due	18,310	22,652
Current	749,203	715,630
Total loans	767,513	738,282
Construction, Land Development and Other Land Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	82	175
Greater than 90 days past due on nonaccrual	3,872	5,467
Total past due	3,954	5,642
Current	72,604	61,257
Total loans	76,558	66,899
Multi Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due		245
Greater than 90 days past due on nonaccrual	181
Total past due	181	245
Current	10,236	11,414
Total loans	10,417	11,659
Non Farm Nonresidential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	1,199	4,574
Greater than 90 days past due on nonaccrual	4,832	3,732
Total past due	6,031	8,306
Current	362,446	372,348
Total loans	368,477	380,654
Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	1,281	4,994
Greater than 90 days past due on nonaccrual	8,885	9,199
Total past due	10,166	14,193
Current	445,286	445,019
Total loans	455,452	459,212
Total loans	455,452	458,436
Revolving Lines Secured By Single Family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	148	245
Greater than 90 days past due on nonaccrual	797	816
Total past due	945	1,061
Current	68,973	58,690
Total loans	69,918	59,751
Total loans	69,918	59,751
Single Family Residential Closed End First Lien [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	1,091	1,441
Greater than 90 days past due on nonaccrual	3,176	4,442
Total past due	4,267	5,883
Current	100,009	97,639
Total loans	104,276	103,522
Total loans	104,276	103,522
Single Family Residential Closed End Junior Lien [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	41	99
Greater than 90 days past due on nonaccrual	129	299
Total past due	170	398
Current	3,761	4,509
Total loans	3,931	4,907
Total loans	3,931	4,907
Single Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	1,280	1,785
Greater than 90 days past due on nonaccrual	4,102	5,557
Total past due	5,382	7,342
Current	172,743	160,838
Total loans	178,125	168,180
Total loans	178,125	168,180
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	306	395
Greater than 90 days past due on nonaccrual	1,885	826
Total past due	2,191	1,221
Current	70,887	50,440
Total loans	73,078	51,661
Total loans	73,078	51,661
Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 days past due on nonaccrual	1	17
Total past due	1	17
Total loans	1	17
Total loans	1	17
Consumer Other Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	335	405
Greater than 90 days past due on nonaccrual	235	247
Total past due	570	652
Current	49,528	49,905
Total loans	50,098	50,557
Total loans	50,098	50,557
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due	335	405
Greater than 90 days past due on nonaccrual	236	264
Total past due	571	669
Current	49,528	49,905
Total loans	50,099	50,574
Total loans	50,099	50,574
Farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,394	3,171
Total loans	3,394	3,171
Obligations Of States And Political Subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	497	739
Total loans	497	739
Other Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due		1
Greater than 90 days past due on nonaccrual		2
Total past due		3
Current	6,868	5,518
Total loans	6,868	5,521
All Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 days past due		1
Greater than 90 days past due on nonaccrual		2
Total past due		3
Current	10,759	9,428
Total loans	10,759	9,431
Total loans	10,759	9,431
Other Loans Held For Sale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 days past due on nonaccrual		(776)
Total past due		(776)
Total loans		$ (776)