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Note 4 - Credit Quality - Loans Modified as Troubled Debt Restructurings by Loan Class and Accrual Status (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Nonaccrual | [1] | $ 1,517 | $ 1,284
Accrual |  | 8,242 | 12,952
TDRs |  | 9,759 | 14,236
Allowance for loan losses related to TDRs |  | 707 | 670
Commercial Portfolio Segment [Member] | Single Family Non-owner Occupied [Member] |  |  |
Nonaccrual | [1] | 33 | 38
Accrual |  | 875 | 892
TDRs |  | 908 | 930
Commercial Portfolio Segment [Member] | Non-farm, Non-residential [Member] |  |  |
Nonaccrual | [1] |  |
Accrual |  | 295 | 4,160
TDRs |  | 295 | 4,160
Consumer Real Estate Portfolio Segment [Member] | Home Equity Lines [Member] |  |  |
Nonaccrual | [1] |  |
Accrual |  | 148 | 158
TDRs |  | 148 | 158
Consumer Real Estate Portfolio Segment [Member] | Single Family Owner Occupied [Member] |  |  |
Nonaccrual | [1] | 1,484 | 905
Accrual |  | 6,690 | 7,503
TDRs |  | 8,174 | 8,408
Consumer Real Estate Portfolio Segment [Member] | Owner Occupied Construction [Member] |  |  |
Nonaccrual | [1] |  | 341
Accrual |  | 234 | 239
TDRs |  | $ 234 | $ 580
[1] | Nonaccrual TDRs are included in total nonaccrual loans disclosed in the nonaccrual table above.

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