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Fair Market Value of Financial Assets and Liabilities, Quantitative Information about Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Mortgage Servicing Rights [Member] | Discount Cash Flows, Computer Pricing Model [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 3,236	$ 2,968
Mortgage Servicing Rights [Member] | Discount Cash Flows, Computer Pricing Model [Member] | Minimum [Member]
Unobservable inputs [Abstract]
Constant prepayment rate	6.10%	4.60%
Probability of default	0.00%	0.00%
Discount rate	10.00%	10.00%
Mortgage Servicing Rights [Member] | Discount Cash Flows, Computer Pricing Model [Member] | Maximum [Member]
Unobservable inputs [Abstract]
Constant prepayment rate	22.40%	25.10%
Probability of default	100.00%	100.00%
Discount rate	11.50%	11.50%
Mortgage Servicing Rights [Member] | Discount Cash Flows, Computer Pricing Model [Member] | Weighted Average [Member]
Unobservable inputs [Abstract]
Constant prepayment rate	10.00%	11.30%
Probability of default	2.60%	3.60%
Discount rate	10.10%	10.10%
Impaired Loans (Collateral Dependent) [Member] | Market Comparable Properties [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 3,192	$ 4,665
Impaired Loans (Collateral Dependent) [Member] | Market Comparable Properties [Member] | Minimum [Member]
Unobservable inputs [Abstract]
Marketability discount	0.00%	5.00%
Impaired Loans (Collateral Dependent) [Member] | Market Comparable Properties [Member] | Maximum [Member]
Unobservable inputs [Abstract]
Marketability discount	76.70%	10.00%
Impaired Loans (Collateral Dependent) [Member] | Market Comparable Properties [Member] | Weighted Average [Member]
Unobservable inputs [Abstract]
Marketability discount	26.80%	7.00%
Other Real Estate/Asset Owned [Member] | Market Comparable Properties [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 6,798	$ 6,472
Other Real Estate/Asset Owned [Member] | Market Comparable Properties [Member] | Minimum [Member]
Unobservable inputs [Abstract]
Comparability adjustments	5.00%	3.00%
Other Real Estate/Asset Owned [Member] | Market Comparable Properties [Member] | Maximum [Member]
Unobservable inputs [Abstract]
Comparability adjustments	51.80%	67.00%
Other Real Estate/Asset Owned [Member] | Market Comparable Properties [Member] | Weighted Average [Member]
Unobservable inputs [Abstract]
Comparability adjustments	11.70%	18.00%

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage of adjustment to the observed price for a similar asset or liability when an identical transaction does not exist, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Percentage of likelihood a loan will not be repaid and instead default, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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