Note 6 - Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Real Estate Portfolio Segment [Member] \| One-to-Four-Family Residential [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Balance, begining of period	$ 381
Balance, end of period	383
Real Estate Portfolio Segment [Member] \| One-to-Four-Family Residential [Member]
Balance, begining of period	3,870	$ 4,488
Provision (reversals)	9	(210)
Charge-offs	(90)	(79)
Recoveries	6	20
Balance, end of period	3,795	4,219
Real Estate Portfolio Segment [Member] \| Multifamily Residential [Member]
Balance, begining of period	665	791
Provision (reversals)	123	$ (158)
Charge-offs	$ (1)
Recoveries
Balance, end of period	$ 787	$ 633
Real Estate Portfolio Segment [Member] \| Nonfarm Nonresidential [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Balance, begining of period	552
Balance, end of period	464
Real Estate Portfolio Segment [Member] \| Nonfarm Nonresidential [Member]
Balance, begining of period	3,599	4,243
Provision (reversals)	(284)	$ (306)
Charge-offs	$ (9)
Recoveries		$ 33
Balance, end of period	$ 3,306	3,970
Real Estate Portfolio Segment [Member] \| Farmland [Member]
Balance, begining of period	714	342
Provision (reversals)	$ (49)	$ 145
Charge-offs
Recoveries
Balance, end of period	$ 665	$ 487
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Balance, begining of period	21
Balance, end of period	21
Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Balance, begining of period	1,456	1,023
Provision (reversals)	$ 57	$ (54)
Charge-offs
Recoveries	$ 58	$ 101
Balance, end of period	1,571	1,070
Commercial Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Balance, begining of period	561
Balance, end of period	553
Commercial Portfolio Segment [Member]
Balance, begining of period	2,565	2,315
Provision (reversals)	644	$ (659)
Charge-offs	(67)
Recoveries	3	$ 3
Balance, end of period	3,145	1,659
Consumer Portfolio Segment [Member]
Balance, begining of period	166	101
Provision (reversals)	71	29
Charge-offs	(83)	(54)
Recoveries	22	31
Balance, end of period	176	107
Receivables Acquired with Deteriorated Credit Quality [Member]
Balance, begining of period	1,515	357
Provision (reversals)	(82)	1,513
Charge-offs	(37)	$ (253)
Recoveries	25
Balance, end of period	1,421	$ 1,617
Balance, begining of period	14,550	13,660
Provision (reversals)	489	300
Charge-offs	(287)	(386)
Recoveries	114	188
Balance, end of period	$ 14,866	$ 13,762

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

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- Definition

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

+ References

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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-Subparagraph (SAB Topic 6.L.1)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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-Name Accounting Standards Codification
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