Loans and Allowance for Loan Losses - Schedule of Past Due Financing Receivables (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 90 days or more delinquent and accruing
Loans, Total past due loans accruing	4,282	758
Loans, Non-accrual loans	2,545	2,746
Loan, Total past due and non-accrual loans	6,827	3,504
Loan, Total loans not past due	$ 421,199	$ 422,265
Percent of gross loans, 30-59 days delinquent and accruing	0.59%	0.09%
Percent of gross loans, 60-89 days delinquent and accruing	0.41%	0.09%
Percent of gross loans, 90 days or more delinquent and accruing	0.00%	0.00%
Percentage of gross loans, Total past due loans accruing	1.00%	0.18%
Percent of gross loans, Non-accrual loans	0.59%	0.64%
Percentage of Total past due and non-accrual loans	1.59%	0.82%
Percentage of Total loans not past due	98.41%	99.18%
30-59Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 2,532	$ 362
60-89 Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,750	396
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 90 days or more delinquent and accruing
Loans, Total past due loans accruing	1,491	18
Loans, Non-accrual loans	323	342
Loan, Total past due and non-accrual loans	1,814	360
Loan, Total loans not past due	49,817	54,146
Commercial [Member] \| 30-59Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	176	13
Commercial [Member] \| 60-89 Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,315	5
Agriculture [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 90 days or more delinquent and accruing
Loans, Total past due loans accruing	109	55
Loans, Non-accrual loans	868	838
Loan, Total past due and non-accrual loans	977	893
Loan, Total loans not past due	78,333	77,431
Agriculture [Member] \| 30-59Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	49	55
Agriculture [Member] \| 60-89 Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	60
Municipal [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 90 days or more delinquent and accruing
Loans, Total past due loans accruing
Loans, Non-accrual loans
Loan, Total past due and non-accrual loans
Loan, Total loans not past due	3,593	3,884
Municipal [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due
Municipal [Member] \| 60-89 Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due
Consumer Loan [Member] \| 30-59Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	36	79
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 90 days or more delinquent and accruing
Loans, Total past due loans accruing	53	82
Loans, Non-accrual loans	36	72
Loan, Total past due and non-accrual loans	89	154
Loan, Total loans not past due	21,314	20,117
Consumer [Member] \| 60-89 Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	17	3
One-To-Four Family Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 90 days or more delinquent and accruing
Loans, Total past due loans accruing	616	603
Loans, Non-accrual loans	557	595
Loan, Total past due and non-accrual loans	1,173	1,198
Loan, Total loans not past due	137,759	135,648
One-To-Four Family Residential Real Estate [Member] \| 30-59Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	300	215
One-To-Four Family Residential Real Estate [Member] \| 60-89 Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	316	388
Construction and Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 90 days or more delinquent and accruing
Loans, Total past due loans accruing
Loans, Non-accrual loans	692	599
Loan, Total past due and non-accrual loans	692	599
Loan, Total loans not past due	15,865	13,139
Construction and Land [Member] \| 30-59Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due
Construction and Land [Member] \| 60-89 Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 90 days or more delinquent and accruing
Loans, Total past due loans accruing	2,013
Loans, Non-accrual loans	69	300
Loan, Total past due and non-accrual loans	2,082	300
Loan, Total loans not past due	114,518	117,900
Commercial Real Estate [Member] \| 30-59Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,971
Commercial Real Estate [Member] \| 60-89 Days Delinquent and Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 42

Recorded investment in Financing receivables that are 30 days or more past due and accruing, total.

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Percentage amount of Recorded investment in financing receivables that are 30 days or more past due and accruing, total.

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Percentage amount of financing receivables that are less than 60 days past due but more than 29 days past due.

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Percentage amount of financing receivables that are less than 90 days past due but more than 59 days past due.

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Percentage amount of Recorded investment in financing receivables that are 90 days or more past due and still accruing.

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No definition available.

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Percentage of financing receivables that are current.

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- Definition

Percentage amount of Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

No definition available.

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Recorded investment that are past due including non accrual status.

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Percentage of recorded investment that are past due including non accrual status.

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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Financing receivables that are current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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Recorded Investment in financing receivables that are past due at the balance sheet date.

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