Note 4 - Loans Receivable (Detail) - Impaired Loans (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Impaired loans with a valuation allowance:
Unpaid Principal Balance	$ 11,927	$ 6,142
Recorded Investment	8,857	4,577
Valuation Allowance	3,070	1,565
Average Recorded Investment	6,718	8,258
Interest Income Recognized	46	22
Impaired loans without a valuation allowance:
Unpaid Principal Balance	10,001	18,498
Recorded Investment	10,001	18,498
Average Recorded Investment	17,840	23,806
Interest Income Recognized		131
Unpaid Principal Balance	21,928	24,640
Recorded Investment	18,858	23,075
Valuation Allowance	3,070	1,565
Average Recorded Investment	24,558	32,064
Interest Income Recognized	46	153
Interest Income Recognized	0	69
Interest Income Based on Original Terms [Member]
Impaired loans without a valuation allowance:
Interest Income Recognized	344	477
One-to-Four-Family Residential [Member]
Impaired loans with a valuation allowance:
Unpaid Principal Balance	2,992	1,424
Recorded Investment	2,479	1,149
Valuation Allowance	513	275
Average Recorded Investment	1,814	3,437
Interest Income Recognized	6	9
Impaired loans without a valuation allowance:
Unpaid Principal Balance	4,737	6,718
Recorded Investment	4,737	6,718
Average Recorded Investment	6,538	8,663
Interest Income Recognized	0	29
Valuation Allowance	513	275
Multifamily Residential [Member]
Impaired loans with a valuation allowance:
Unpaid Principal Balance	3,428
Recorded Investment	2,958
Valuation Allowance	470
Average Recorded Investment	1,479	1,128
Interest Income Recognized	40
Impaired loans without a valuation allowance:
Unpaid Principal Balance		3,459
Recorded Investment		3,459
Average Recorded Investment	2,785	4,474
Interest Income Recognized		46
Valuation Allowance	470
Nonfarm Nonresidential [Member]
Impaired loans with a valuation allowance:
Unpaid Principal Balance	3,312	3,596
Recorded Investment	2,114	2,817
Valuation Allowance	1,198	778
Average Recorded Investment	2,466	2,287
Interest Income Recognized		4
Impaired loans without a valuation allowance:
Unpaid Principal Balance	3,217	4,876
Recorded Investment	3,217	4,876
Average Recorded Investment	5,423	8,099
Interest Income Recognized		50
Valuation Allowance	1,198	778
Construction and Land Development [Member]
Impaired loans with a valuation allowance:
Unpaid Principal Balance	1,808	737
Recorded Investment	1,306	607
Valuation Allowance	502	130
Average Recorded Investment	957	1,393
Interest Income Recognized		9
Impaired loans without a valuation allowance:
Unpaid Principal Balance	2,001	3,396
Recorded Investment	2,001	3,396
Average Recorded Investment	2,918	2,240
Interest Income Recognized		5
Valuation Allowance	502	130
Commercial Loan [Member]
Impaired loans with a valuation allowance:
Unpaid Principal Balance	381	380
Recorded Investment		0
Valuation Allowance	381	380
Average Recorded Investment		0
Interest Income Recognized		0
Impaired loans without a valuation allowance:
Unpaid Principal Balance	21	22
Recorded Investment	21	22
Average Recorded Investment	150	278
Interest Income Recognized	0
Valuation Allowance	381	380
Consumer Loan [Member]
Impaired loans with a valuation allowance:
Unpaid Principal Balance	6	5
Recorded Investment	0	4
Valuation Allowance	6	2
Average Recorded Investment	2	13
Interest Income Recognized	0
Impaired loans without a valuation allowance:
Unpaid Principal Balance	25	27
Recorded Investment	25	27
Average Recorded Investment	26	52
Interest Income Recognized	0	1
Valuation Allowance	$ 6	$ 2

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

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-Paragraph 17

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Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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