Fair Value (Details 4) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Financial assets
Cash and cash equivalents, Carrying Amount	$ 84,006	$ 41,778	$ 67,372	$ 56,014
Restricted stock, Carrying Amount	10,439	9,583
Loans held for sale, Carrying Amount	502	355
Loans, net, Carrying Amount	1,539,333	1,416,783
Mortgage servicing rights, Carrying Amount	1,154	854
Accrued interest receivable, Carrying Amount	6,576	5,504
Financial liabilities
Deposits, Carrying Amount	1,609,524	1,524,756
Short-term borrowings, Carrying Amount	286,088	198,460
Long-term borrowings	9,182	15,036
Accrued interest payable, Carrying Amount	696	507
Fair Value, Measurements, Recurring
Financial assets
Cash and cash equivalents, Fair Value	84,006	41,778
Loans held for sale, Fair Value	502	365
Loans, net, Fair Value	1,544,465	1,406,951
Mortgage servicing rights, Fair Value	1,154	854
Accrued interest receivable, Fair Value	6,576	5,504
Financial liabilities
Deposits, Fair Value	1,606,396	1,521,447
Short-term borrowings, Fair Value	286,088	198,460
Long-term borrowings, Fair Value	9,018	15,009
Accrued interest payable, Fair value	696	507
Fair Value, Measurements, Recurring \| Level 1
Financial assets
Cash and cash equivalents, Fair Value	22,510	19,678
Loans held for sale, Fair Value	0	0
Loans, net, Fair Value	0	0
Mortgage servicing rights, Fair Value	0	0
Accrued interest receivable, Fair Value	0	0
Financial liabilities
Deposits, Fair Value	1,361,638	1,289,037
Short-term borrowings, Fair Value	0	0
Long-term borrowings, Fair Value	0	0
Accrued interest payable, Fair value	39	35
Fair Value, Measurements, Recurring \| Level 2
Financial assets
Cash and cash equivalents, Fair Value	61,496	22,100
Loans held for sale, Fair Value	502	365
Loans, net, Fair Value	0	0
Mortgage servicing rights, Fair Value	1,154	854
Accrued interest receivable, Fair Value	2,235	1,924
Financial liabilities
Deposits, Fair Value	244,758	232,410
Short-term borrowings, Fair Value	286,088	198,460
Long-term borrowings, Fair Value	9,018	15,009
Accrued interest payable, Fair value	657	472
Fair Value, Measurements, Recurring \| Level 3
Financial assets
Cash and cash equivalents, Fair Value	0	0
Loans held for sale, Fair Value	0	0
Loans, net, Fair Value	1,544,465	1,406,951
Mortgage servicing rights, Fair Value	0	0
Accrued interest receivable, Fair Value	4,341	3,580
Financial liabilities
Deposits, Fair Value	0	0
Short-term borrowings, Fair Value	0	0
Long-term borrowings, Fair Value	0	0
Accrued interest payable, Fair value	$ 0	$ 0

Accrued interest payable fair value.

No definition available.

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- Definition

Accrued interest receivable fair value.

+ References

No definition available.

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- Definition

Cash cash equivalents and federal funds sold fair value.

+ References

No definition available.

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- Definition

Mortgage servicing rights net.

+ References

No definition available.

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- Definition

Mortgage servicing rights net fair value.

+ References

No definition available.

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- Definition

The sum of cash and cash equivalents plus Federal Funds Sold. Cash and cash equivalents consist of short term, highly liquid investments that are readily convertible to known amounts of cash and are so near their maturity that they present negligible risk of changes in value due to changes in interest rates -- usually with an original maturity less than 90 days.

+ References

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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No definition available.

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No definition available.

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(5))
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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ References

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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No definition available.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/subtopic&trid=2196772

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- Definition

Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
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-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

Intrinsic value of equity-based compensation awards outstanding. Excludes stock and unit options.

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No definition available.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

No definition available.

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