Derivative Financial Instruments (Details) (Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014	Jan. 15, 2015
Long-term Borrowings [Member] \| Cash Flow Hedges [Member]
Derivative [Line Items]
Notional Amount	$ 110,000	$ 110,000
Derivative Fair Value, Asset	0	0
Derivative Fair Value, Liability	4,323	2,911
Net Ineffectiveness Hedge Gains/(Losses)	0	0
Commercial Loan [Member] \| Fair Value Hedges [Member]
Derivative [Line Items]
Notional Amount	9,950		9,950
Derivative Fair Value, Asset	31
Derivative Fair Value, Liability	0
Net Ineffectiveness Hedge Gains/(Losses)	$ 0

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

Fair value of all derivative assets designated as fair value hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959

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- Definition

Fair value of all derivative liabilities designated as fair value hedging instruments.

+ References

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- Definition

Amount of gain (loss)recognized in the income statement from the hedging ineffectiveness of a fair value hedge.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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