Note 6 - Allowances for Loan and Lease Losses and Real Estate Losses (Details) - Allowance for Loan and Lease Losses (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
ALLL, beginning balance	$ 12,711	$ 15,676
Provision charged to expense	1,588us-gaap_ProvisionForLoanAndLeaseLosses
Losses charged off	(889)	(3,945)
Recoveries	250	980
ALLL, ending balance	13,660	12,711
ALLL Balances:
ALLL, Individually evaluated for impairment	1,011	2,162
ALLL, Collectively evaluated for impairment	12,649	10,549
Loan balances:
Loans, Individually evaluated for impairment	10,336	12,433
Loans, Collectively evaluated for impairment	1,044,781	371,505
Loans, ending balance	1,055,117	383,938
One-to-Four-Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALLL, beginning balance	4,549	5,099
Provision charged to expense	33	478
Losses charged off	(116)	(1,249)
Recoveries	90	221
ALLL, ending balance	4,556	4,549
ALLL Balances:
ALLL, Individually evaluated for impairment	251	279
ALLL, Collectively evaluated for impairment	4,305	4,270
Loan balances:
Loans, Individually evaluated for impairment	5,441	4,753
Loans, Collectively evaluated for impairment	315,048	124,555
Loans, ending balance	320,489	129,308
Multifamily Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALLL, beginning balance	1,001	1,319
Provision charged to expense	(210)	558
Losses charged off		(876)
ALLL, ending balance	791	1,001
ALLL Balances:
ALLL, Collectively evaluated for impairment	791	1,001
Loan balances:
Loans, Collectively evaluated for impairment	45,181	25,773
Loans, ending balance	45,181	25,773
Nonfarm Nonresidential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALLL, beginning balance	4,271	6,949
Provision charged to expense	361	(2,001)
Losses charged off	(114)	(1,177)
Recoveries	14	500
ALLL, ending balance	4,532	4,271
ALLL Balances:
ALLL, Individually evaluated for impairment	580	1,119
ALLL, Collectively evaluated for impairment	3,952	3,152
Loan balances:
Loans, Individually evaluated for impairment	3,113	4,057
Loans, Collectively evaluated for impairment	366,861	164,845
Loans, ending balance	369,974	168,902
Farmland [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALLL, beginning balance	158	251
Provision charged to expense	184	(93)
ALLL, ending balance	342	158
ALLL Balances:
ALLL, Individually evaluated for impairment	123	133
ALLL, Collectively evaluated for impairment	219	25
Loan balances:
Loans, Individually evaluated for impairment	734	782
Loans, Collectively evaluated for impairment	46,465	1,881
Loans, ending balance	47,199	2,663
Construction and Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALLL, beginning balance	1,383	879
Provision charged to expense	8	496
Losses charged off	(444)	(115)
Recoveries	76	123
ALLL, ending balance	1,023	1,383
ALLL Balances:
ALLL, Individually evaluated for impairment	45	631
ALLL, Collectively evaluated for impairment	978	752
Loan balances:
Loans, Individually evaluated for impairment	708	2,467
Loans, Collectively evaluated for impairment	97,886	21,424
Loans, ending balance	98,594	23,891
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALLL, beginning balance	1,268	956
Provision charged to expense	1,072	617
Losses charged off	(29)	(386)
Recoveries	4	81
ALLL, ending balance	2,315	1,268
ALLL Balances:
ALLL, Collectively evaluated for impairment	2,315	1,268
Loan balances:
Loans, Individually evaluated for impairment	306	350
Loans, Collectively evaluated for impairment	139,565	28,683
Loans, ending balance	139,871	29,033
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALLL, beginning balance	81	223
Provision charged to expense	140	(55)
Losses charged off	(186)	(142)
Recoveries	66	55
ALLL, ending balance	101	81
ALLL Balances:
ALLL, Individually evaluated for impairment	12
ALLL, Collectively evaluated for impairment	89	81
Loan balances:
Loans, Individually evaluated for impairment	34	24
Loans, Collectively evaluated for impairment	33,775	4,344
Loans, ending balance	$ 33,809	$ 4,368

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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-Section S99

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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