Note 4 - Loans and Allowance for Loan Losses (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Loans with a specific valuation allowance
Loans with a specific valuation allowance, specific allowance	$ 818		$ 785
Total
Recorded balance	5,677		5,381
Unpaid principal balance	7,235		6,939
Specific allowance	818		785
Average investment in impaired loans	5,531	12,410
Interest income recognized		1
One-to-four Family Units [Member]
Loans without a specific valuation allowance
Loans without a specific allowance, recorded balance	869		632
Loans without a specific allowance, unpaid principal balance	869		632
Loans without a specific allowance, average investment in impaired loans	709	681
Loans without a specific allowance, interest income recognized		1
Loans with a specific valuation allowance
Loans with a specific valuation allowance, recorded balance	548		279
Loans with a specific valuation allowance, unpaid principal balance	548		279
Loans with a specific valuation allowance, specific allowance	80		36
Loans with a specific valuation allowance, average investment in impaired loans	550	334
Total
Recorded balance	1,417		911
Unpaid principal balance	1,417		911
Specific allowance	80		36
Average investment in impaired loans	1,259	1,015
Interest income recognized		1
Real Estate Construction [Member]
Loans without a specific valuation allowance
Loans without a specific allowance, recorded balance	74		74
Loans without a specific allowance, unpaid principal balance	74		74
Loans without a specific allowance, average investment in impaired loans	74	95
Loans with a specific valuation allowance
Loans with a specific valuation allowance, recorded balance	2,612		2,819
Loans with a specific valuation allowance, unpaid principal balance	3,867		4,074
Loans with a specific valuation allowance, specific allowance	375		376
Loans with a specific valuation allowance, average investment in impaired loans	2,750	4,234
Total
Recorded balance	2,686		2,893
Unpaid principal balance	3,941		4,148
Specific allowance	375		376
Average investment in impaired loans	2,824	4,329
Real Estate Commercial [Member]
Loans without a specific valuation allowance
Loans without a specific allowance, average investment in impaired loans		553
Loans with a specific valuation allowance
Loans with a specific valuation allowance, recorded balance			460
Loans with a specific valuation allowance, unpaid principal balance			460
Loans with a specific valuation allowance, specific allowance			158
Loans with a specific valuation allowance, average investment in impaired loans		250
Total
Recorded balance			460
Unpaid principal balance			460
Specific allowance			158
Average investment in impaired loans		803
Commercial Loans [Member]
Loans without a specific valuation allowance
Loans without a specific allowance, recorded balance	333		341
Loans without a specific allowance, unpaid principal balance	333		341
Loans without a specific allowance, average investment in impaired loans	336	2,689
Loans with a specific valuation allowance
Loans with a specific valuation allowance, recorded balance	623		685
Loans with a specific valuation allowance, unpaid principal balance	926		988
Loans with a specific valuation allowance, specific allowance	323		203
Loans with a specific valuation allowance, average investment in impaired loans	623	3,096
Total
Recorded balance	956		1,026
Unpaid principal balance	1,259		1,329
Specific allowance	323		203
Average investment in impaired loans	959	5,785
Consumer and Other Loans [Member]
Loans without a specific valuation allowance
Loans without a specific allowance, average investment in impaired loans	489
Loans with a specific valuation allowance
Loans with a specific valuation allowance, recorded balance	618		91
Loans with a specific valuation allowance, unpaid principal balance	618		91
Loans with a specific valuation allowance, specific allowance	39		12
Loans with a specific valuation allowance, average investment in impaired loans		478
Total
Recorded balance	618		91
Unpaid principal balance	618		91
Specific allowance	39		12
Average investment in impaired loans	$ 489	$ 478

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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)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

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-Publisher FASB

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-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524

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-Publisher FASB

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-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

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-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

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