Fair Value (Details Textual) - USD ($)	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]
Impaired Financing Receivable, Recorded Investment	$ 0		$ 4,604,000
Impaired Financing Receivables, Provisional Expenses	134,000	$ 208,000
Mortgage Servicing Rights at Fair Value	539,000		534,000
Valuation Allowance of Mortgage Servicing Rights	395,000		432,000
Proceeds from Collection of Loans Receivable	37,000	$ 33,000
Real Estate Held-for-sale, Increase (Decrease) in Fair Value	544,000
Impaired Financing Receivable, Related Allowance	779,000		758,000
Collateral Dependent Loan [Member]
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]
Impaired Financing Receivable, Recorded Investment	0		4,600,000
Impaired Financing Receivable, Related Allowance	$ 0		$ 0
Minimum [Member] \| Real Estate held for sale [Member]
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Maximum [Member] \| Real Estate held for sale [Member]
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]
Fair Value Inputs, Discount Rate	30.00%

The provisional expenses recorded for impaired financing receivables.

No definition available.

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- Definition

Fair value measurement of mortgage servicing rights.

+ References

No definition available.

+ Details

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- Definition

Fair value of real estate held for sales during the period

+ References

No definition available.

+ Details

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- Definition

Reduction in valuation allowance of Mortgage servicing rights.

+ References

No definition available.

+ Details

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- Definition

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=66048111&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

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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- Definition

The cash inflow associated with the collection, including prepayments, of loans receivable issued for financing of goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585

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