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Loans and Allowance for Loan Losses - Schedule of Impaired Financing Receivables (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016
Financing Receivable, Impaired [Line Items] |  |
Unpaid contractual principal | $ 8,377 | $ 8,755
Impaired loan balance | 6,427 | 6,728
Impaired loans without an allowance | 5,305 | 5,368
Impaired loans with an allowance | 1,122 | 1,360
Related allowance recorded | 275 | 274
Year-to-date average loan balance | 6,535 | 7,374
Year-to-date interest income recognized | 287 | 601
One-To-Four Family Residential Real Estate [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid contractual principal | 732 | 780
Impaired loan balance | 732 | 780
Impaired loans without an allowance | 732 | 780
Impaired loans with an allowance |  |
Related allowance recorded |  |
Year-to-date average loan balance | 739 | 798
Year-to-date interest income recognized | 4 | 7
Construction and Land [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid contractual principal | 3,776 | 3,672
Impaired loan balance | 2,041 | 1,937
Impaired loans without an allowance | 2,041 | 1,937
Impaired loans with an allowance |  |
Related allowance recorded |  |
Year-to-date interest income recognized | 33 | 72
Commercial Real Estate [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid contractual principal | 2,206 | 2,445
Impaired loan balance | 2,206 | 2,445
Impaired loans without an allowance | 2,156 | 2,145
Impaired loans with an allowance | 50 | 300
Related allowance recorded | 50 | 81
Year-to-date interest income recognized | 246 | 505
Commercial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid contractual principal | 323 | 355
Impaired loan balance | 323 | 355
Impaired loans without an allowance | 70 | 46
Impaired loans with an allowance | 253 | 309
Related allowance recorded | 76 | 87
Year-to-date average loan balance | 361 | 425
Year-to-date interest income recognized |  | 2
Agriculture [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid contractual principal | 1,083 | 1,173
Impaired loan balance | 868 | 881
Impaired loans without an allowance | 49 | 147
Impaired loans with an allowance | 819 | 734
Related allowance recorded | 149 | 89
Year-to-date average loan balance | 933 | 1,000
Year-to-date interest income recognized | 1 | 2
Municipal [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid contractual principal | 221 | 258
Impaired loan balance | 221 | 258
Impaired loans without an allowance | 221 | 258
Impaired loans with an allowance |  |
Related allowance recorded |  |
Year-to-date average loan balance | 236 | 418
Year-to-date interest income recognized | 3 |
Consumer [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid contractual principal | 36 | 72
Impaired loan balance | 36 | 72
Impaired loans without an allowance | 36 | 55
Impaired loans with an allowance |  | 17
Related allowance recorded |  | 17
Year-to-date average loan balance | 39 | 78
Year-to-date interest income recognized |  | 13
Construction and Land [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Year-to-date average loan balance | 2,010 | 2,068
Commercial Real Estate [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Year-to-date average loan balance | $ 2,217 | $ 2,587

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