Mortgage Banking (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Mortgage servicing assets:
Balance at beginning of period	$ 10,133fdef_MortgageServicingAssets	$ 10,121fdef_MortgageServicingAssets	$ 10,219fdef_MortgageServicingAssets
Loans sold, servicing retained	1,191fdef_MortgageLoansSoldServicedRetained	2,110fdef_MortgageLoansSoldServicedRetained	3,464fdef_MortgageLoansSoldServicedRetained
Amortization	(1,401)	(2,098)	(3,562)
Carrying value before valuation allowance at end of period	9,923	10,133	10,121
Valuation allowance:
Balance at beginning of period	(1,027)	(2,288)	(1,529)
Impairment recovery (charges)	116us-gaap_AssetImpairmentCharges	1,261us-gaap_AssetImpairmentCharges	(759)us-gaap_AssetImpairmentCharges
Balance at end of period	(911)	(1,027)	(2,288)
Net carrying value of MSRs at end of period	9,012fdef_NetCarryingValueOfMSRs	9,106fdef_NetCarryingValueOfMSRs	7,833fdef_NetCarryingValueOfMSRs
Fair value of MSRs at end of period	$ 9,304fdef_FairValueOfMsrs	$ 9,686fdef_FairValueOfMsrs	$ 7,833fdef_FairValueOfMsrs

Fair Value of mortgage servicing rights as of the balance sheet date.

No definition available.

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- Definition

The carrying amount of mortgage loans, that were sold or serviced retained during the reporting period.

+ References

No definition available.

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- Definition

Total carrying amount of mortgage servicing assets at beginning of balance sheet.

+ References

No definition available.

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- Definition

Total Carrying value of mortgage servicing assets, before valuation allowance at end of period.

+ References

No definition available.

+ Details

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- Definition

Net carrying Value of mortgage servicing rights as of the balance sheet date.

+ References

No definition available.

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- Details

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- Definition

The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 4

-Subparagraph (a)(4)

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

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-Section S99

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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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