Note 5 - Loans (Details) - Composition of Impaired Loans by Class (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		$ 25,206
Impaired loans with no related allowance, unpaid principal balance		56,494
Impaired loans with related allowance, recorded investment		16,889
Impaired loans with related allowance, unpaid principal balance		16,889
Impaired loans with related allowance, related allowance		2,477
Total Impaired Loans, recorded investment	44,185	42,095
Total Impaired Loans, unpaid principal balance		73,383
Total Impaired Loans, related allowance		2,477
Construction Land Development And Other Land Loans [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	3,260	3,732
Impaired loans with no related allowance, unpaid principal balance	6,519	16,005
Impaired loans with related allowance, recorded investment	261	254
Impaired loans with related allowance, unpaid principal balance	261	254
Impaired loans with related allowance, related allowance	68	68
Total Impaired Loans, recorded investment	3,521	3,986
Total Impaired Loans, unpaid principal balance	6,780	16,259
Total Impaired Loans, related allowance	68	68
Construction Land Development And Other Land Loans [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		776
Impaired loans with no related allowance, unpaid principal balance		8,656
Total Impaired Loans, recorded investment		776
Total Impaired Loans, unpaid principal balance		8,656
Construction Land Development And Other Land Loans [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		4,508
Impaired loans with no related allowance, unpaid principal balance		24,661
Impaired loans with related allowance, recorded investment		254
Impaired loans with related allowance, unpaid principal balance		254
Impaired loans with related allowance, related allowance		68
Total Impaired Loans, recorded investment		4,762
Total Impaired Loans, unpaid principal balance		24,915
Total Impaired Loans, related allowance		68
Multi Family Residential [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	181	0
Impaired loans with no related allowance, unpaid principal balance	239	0
Impaired loans with related allowance, recorded investment	0	246
Impaired loans with related allowance, unpaid principal balance	0	246
Impaired loans with related allowance, related allowance	0	76
Total Impaired Loans, recorded investment	181	246
Total Impaired Loans, unpaid principal balance	239	246
Total Impaired Loans, related allowance	0	76
Multi Family Residential [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Total Impaired Loans, recorded investment		0
Total Impaired Loans, unpaid principal balance		0
Multi Family Residential [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Impaired loans with related allowance, recorded investment		246
Impaired loans with related allowance, unpaid principal balance		246
Impaired loans with related allowance, related allowance		76
Total Impaired Loans, recorded investment		246
Total Impaired Loans, unpaid principal balance		246
Total Impaired Loans, related allowance		76
Non Farm Nonresidential [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	24,201	18,012
Impaired loans with no related allowance, unpaid principal balance	30,986	24,275
Impaired loans with related allowance, recorded investment	12,321	14,309
Impaired loans with related allowance, unpaid principal balance	12,321	14,309
Impaired loans with related allowance, related allowance	1,884	2,055
Total Impaired Loans, recorded investment	36,522	32,321
Total Impaired Loans, unpaid principal balance	43,307	38,584
Total Impaired Loans, related allowance	1,884	2,055
Non Farm Nonresidential [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Total Impaired Loans, recorded investment		0
Total Impaired Loans, unpaid principal balance		0
Non Farm Nonresidential [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		18,012
Impaired loans with no related allowance, unpaid principal balance		24,275
Impaired loans with related allowance, recorded investment		14,309
Impaired loans with related allowance, unpaid principal balance		14,309
Impaired loans with related allowance, related allowance		2,055
Total Impaired Loans, recorded investment		32,321
Total Impaired Loans, unpaid principal balance		38,584
Total Impaired Loans, related allowance		2,055
Commercial Real Estate Loans [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	27,642	21,744
Impaired loans with no related allowance, unpaid principal balance	37,744	40,280
Impaired loans with related allowance, recorded investment	12,582	14,809
Impaired loans with related allowance, unpaid principal balance	12,582	14,809
Impaired loans with related allowance, related allowance	1,952	2,199
Total Impaired Loans, recorded investment	40,224	36,553
Total Impaired Loans, unpaid principal balance	50,326	55,089
Total Impaired Loans, related allowance	1,952	2,199
Commercial Real Estate Loans [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		776
Impaired loans with no related allowance, unpaid principal balance		8,656
Total Impaired Loans, recorded investment		776
Total Impaired Loans, unpaid principal balance		8,656
Commercial Real Estate Loans [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		22,520
Impaired loans with no related allowance, unpaid principal balance		48,936
Impaired loans with related allowance, recorded investment		14,809
Impaired loans with related allowance, unpaid principal balance		14,809
Impaired loans with related allowance, related allowance		2,199
Total Impaired Loans, recorded investment		37,329
Total Impaired Loans, unpaid principal balance		63,745
Total Impaired Loans, related allowance		2,199
Revolving Lines Secured By Single Family Residential Properties [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	0	0
Impaired loans with no related allowance, unpaid principal balance	0	0
Impaired loans with related allowance, recorded investment	404	404
Impaired loans with related allowance, unpaid principal balance	404	404
Impaired loans with related allowance, related allowance	83	0
Total Impaired Loans, recorded investment	404	404
Total Impaired Loans, unpaid principal balance	404	404
Total Impaired Loans, related allowance	83	0
Revolving Lines Secured By Single Family Residential Properties [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Impaired loans with related allowance, recorded investment		0
Impaired loans with related allowance, unpaid principal balance		0
Revolving Lines Secured By Single Family Residential Properties [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Impaired loans with related allowance, recorded investment		404
Impaired loans with related allowance, unpaid principal balance		404
Impaired loans with related allowance, related allowance		0
Total Impaired Loans, recorded investment		404
Total Impaired Loans, unpaid principal balance		404
Total Impaired Loans, related allowance		0
Single Family Residential Closed End First Lien [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	1,478	1,963
Impaired loans with no related allowance, unpaid principal balance	5,924	6,408
Impaired loans with related allowance, recorded investment	553	707
Impaired loans with related allowance, unpaid principal balance	553	707
Impaired loans with related allowance, related allowance	49	54
Total Impaired Loans, recorded investment	2,031	2,670
Total Impaired Loans, unpaid principal balance	6,477	7,115
Total Impaired Loans, related allowance	49	54
Single Family Residential Closed End First Lien [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Total Impaired Loans, recorded investment		0
Total Impaired Loans, unpaid principal balance		0
Single Family Residential Closed End First Lien [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		1,963
Impaired loans with no related allowance, unpaid principal balance		6,408
Impaired loans with related allowance, recorded investment		707
Impaired loans with related allowance, unpaid principal balance		707
Impaired loans with related allowance, related allowance		54
Total Impaired Loans, recorded investment		2,670
Total Impaired Loans, unpaid principal balance		7,115
Total Impaired Loans, related allowance		54
Single Family Residential Closed End Junior Lien [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	0	31
Impaired loans with no related allowance, unpaid principal balance	0	31
Impaired loans with related allowance, recorded investment	198	173
Impaired loans with related allowance, unpaid principal balance	198	173
Impaired loans with related allowance, related allowance	63	162
Total Impaired Loans, recorded investment	198	204
Total Impaired Loans, unpaid principal balance	198	204
Total Impaired Loans, related allowance	63	162
Single Family Residential Closed End Junior Lien [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Total Impaired Loans, recorded investment		0
Total Impaired Loans, unpaid principal balance		0
Single Family Residential Closed End Junior Lien [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		31
Impaired loans with no related allowance, unpaid principal balance		31
Impaired loans with related allowance, recorded investment		173
Impaired loans with related allowance, unpaid principal balance		173
Impaired loans with related allowance, related allowance		162
Total Impaired Loans, recorded investment		204
Total Impaired Loans, unpaid principal balance		204
Total Impaired Loans, related allowance		162
Single Family Residential [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	1,478	1,994
Impaired loans with no related allowance, unpaid principal balance	5,924	6,439
Impaired loans with related allowance, recorded investment	1,155	1,284
Impaired loans with related allowance, unpaid principal balance	1,155	1,284
Impaired loans with related allowance, related allowance	195	216
Total Impaired Loans, recorded investment	2,633	3,278
Total Impaired Loans, unpaid principal balance	7,079	7,723
Total Impaired Loans, related allowance	195	216
Single Family Residential [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Total Impaired Loans, recorded investment		0
Total Impaired Loans, unpaid principal balance		0
Single Family Residential [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		1,994
Impaired loans with no related allowance, unpaid principal balance		6,439
Impaired loans with related allowance, recorded investment		1,284
Impaired loans with related allowance, unpaid principal balance		1,284
Impaired loans with related allowance, related allowance		216
Total Impaired Loans, recorded investment		3,278
Total Impaired Loans, unpaid principal balance		7,723
Total Impaired Loans, related allowance		216
Commercial And Industrial [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	952	674
Impaired loans with no related allowance, unpaid principal balance	1,845	1,101
Impaired loans with related allowance, recorded investment	342	776
Impaired loans with related allowance, unpaid principal balance	342	776
Impaired loans with related allowance, related allowance	17	58
Total Impaired Loans, recorded investment	1,294	1,450
Total Impaired Loans, unpaid principal balance	2,187	1,877
Total Impaired Loans, related allowance	17	58
Commercial And Industrial [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		0
Impaired loans with no related allowance, unpaid principal balance		0
Total Impaired Loans, recorded investment		0
Total Impaired Loans, unpaid principal balance		0
Commercial And Industrial [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		674
Impaired loans with no related allowance, unpaid principal balance		1,101
Impaired loans with related allowance, recorded investment		776
Impaired loans with related allowance, unpaid principal balance		776
Impaired loans with related allowance, related allowance		58
Total Impaired Loans, recorded investment		1,450
Total Impaired Loans, unpaid principal balance		1,877
Total Impaired Loans, related allowance		58
Consumer [Member] | Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	7	18
Impaired loans with no related allowance, unpaid principal balance	7	18
Impaired loans with related allowance, recorded investment	27	20
Impaired loans with related allowance, unpaid principal balance	27	20
Impaired loans with related allowance, related allowance	4	4
Total Impaired Loans, recorded investment	34	38
Total Impaired Loans, unpaid principal balance	34	38
Total Impaired Loans, related allowance	4	4
Consumer [Member] | Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Total Impaired Loans, recorded investment		0
Total Impaired Loans, unpaid principal balance		0
Consumer [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		18
Impaired loans with no related allowance, unpaid principal balance		18
Impaired loans with related allowance, recorded investment		20
Impaired loans with related allowance, unpaid principal balance		20
Impaired loans with related allowance, related allowance		4
Total Impaired Loans, recorded investment		38
Total Impaired Loans, unpaid principal balance		38
Total Impaired Loans, related allowance		4
Loans, Gross [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment	30,079	24,430
Impaired loans with no related allowance, unpaid principal balance	45,520	47,838
Impaired loans with related allowance, recorded investment	14,106	16,889
Impaired loans with related allowance, unpaid principal balance	14,106	16,889
Impaired loans with related allowance, related allowance	2,168	2,477
Total Impaired Loans, recorded investment	44,185	41,319
Total Impaired Loans, unpaid principal balance	59,626	64,727
Total Impaired Loans, related allowance	2,168	2,477
Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Composition of Impaired Loans by Class [Line Items]
Impaired loans with no related allowance, recorded investment		776
Impaired loans with no related allowance, unpaid principal balance		8,656
Total Impaired Loans, recorded investment		776
Total Impaired Loans, unpaid principal balance		$ 8,656