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Note 6 - Loans and Allowance for Loan Losses - Carrying Amount of Impaired Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
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Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |
Impaired loans with no related allowance recorded, Carrying Amount |  |
Impaired loans with no related allowance recorded, Unpaid Principal Balance |  |
Impaired loans with an allowance recorded, Carrying Amount | $ 1,411 | $ 1,445
Impaired loans with an allowance recorded, Unpaid Principal Balance | 1,411 | 1,445
Impaired loans with an allowance recorded, Related Allowances | 95 | 95
Total impaired loans, Carrying Amount | 1,411 | 1,445
Total impaired loans, Unpaid Principal Balance | 1,411 | 1,445
Total impaired loans, Related Allowance | 95 | 95
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] |  |
Impaired loans with no related allowance recorded, Carrying Amount | 54 | 54
Impaired loans with no related allowance recorded, Unpaid Principal Balance | 54 | 54
Impaired loans with an allowance recorded, Carrying Amount | 197 | 198
Impaired loans with an allowance recorded, Unpaid Principal Balance | 197 | 198
Impaired loans with an allowance recorded, Related Allowances | 5 | 5
Total impaired loans, Carrying Amount | 251 | 252
Total impaired loans, Unpaid Principal Balance | 251 | 252
Total impaired loans, Related Allowance | $ 5 | $ 5
Real Estate [Member] | Secured by Multi-family Residential Properties [Member] |  |
Impaired loans with no related allowance recorded, Carrying Amount |  |
Impaired loans with no related allowance recorded, Unpaid Principal Balance |  |
Impaired loans with an allowance recorded, Carrying Amount |  |
Impaired loans with an allowance recorded, Unpaid Principal Balance |  |
Impaired loans with an allowance recorded, Related Allowances |  |
Total impaired loans, Carrying Amount |  |
Total impaired loans, Unpaid Principal Balance |  |
Total impaired loans, Related Allowance |  |
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] |  |
Impaired loans with no related allowance recorded, Carrying Amount |  |
Impaired loans with no related allowance recorded, Unpaid Principal Balance |  |
Impaired loans with an allowance recorded, Carrying Amount | $ 562 | $ 573
Impaired loans with an allowance recorded, Unpaid Principal Balance | 562 | 573
Impaired loans with an allowance recorded, Related Allowances | 120 | 130
Total impaired loans, Carrying Amount | 562 | 573
Total impaired loans, Unpaid Principal Balance | 562 | 573
Total impaired loans, Related Allowance | $ 120 | $ 130
Commercial and Industrial Loans [Member] |  |
Impaired loans with no related allowance recorded, Carrying Amount |  |
Impaired loans with no related allowance recorded, Unpaid Principal Balance |  |
Impaired loans with an allowance recorded, Carrying Amount | $ 436 | $ 444
Impaired loans with an allowance recorded, Unpaid Principal Balance | 436 | 444
Impaired loans with an allowance recorded, Related Allowances | 72 | 80
Total impaired loans, Carrying Amount | 436 | 444
Total impaired loans, Unpaid Principal Balance | 436 | 444
Total impaired loans, Related Allowance | 72 | 80
Impaired loans with no related allowance recorded, Carrying Amount | 54 | 54
Impaired loans with no related allowance recorded, Unpaid Principal Balance | 54 | 54
Impaired loans with an allowance recorded, Carrying Amount | 2,606 | 2,660
Impaired loans with an allowance recorded, Unpaid Principal Balance | 2,606 | 2,660
Impaired loans with an allowance recorded, Related Allowances | 292 | 310
Total impaired loans, Carrying Amount | 2,660 | 2,714
Total impaired loans, Unpaid Principal Balance | 2,660 | 2,714
Total impaired loans, Related Allowance | $ 292 | $ 310

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- Definition 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 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
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- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
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