Loans and Allowance for Credit Losses (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance			$ 7,695
TDR Balance	7,798		7,695
Troubled Debt Restructuring [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	23,748	32,401
New TDRs	0	0
Disbursements (Payments)	(49)	978
Charge Offs	(403)	(701)
Reclassification/Transfers In(Out)	(238)	0
Payoffs	0	(1,279)
TDR Balance	23,058	31,399
Related allowance	1,007	159
Accruing Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	16,674	26,088
New TDRs	0	0
Disbursements (Payments)	(30)	1,073
Charge Offs	0	(549)
Reclassification/Transfers In(Out)	0	0
Payoffs	0	(1,279)
TDR Balance	16,644	25,333
Related allowance	317	159
Nonaccrual Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	7,074	6,313
New TDRs	0	0
Disbursements (Payments)	(19)	(95)
Charge Offs	(403)	(152)
Reclassification/Transfers In(Out)	(238)	0
Payoffs	0	0
TDR Balance	6,414	6,066
Related allowance	690	0
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance			1,303
TDR Balance	1,884		1,303
Construction [Member] \| Accruing Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	4,022	1,620
New TDRs	0	0
Disbursements (Payments)	(6)	(314)
Charge Offs	0	0
Reclassification/Transfers In(Out)	0	0
Payoffs	0	0
TDR Balance	4,016	1,306
Related allowance	39	1
Construction [Member] \| Nonaccrual Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	3,321	3,561
New TDRs	0	0
Disbursements (Payments)	(7)	(2)
Charge Offs	(363)	(17)
Reclassification/Transfers In(Out)	2,911	760
Payoffs	0	0
TDR Balance	5,862	4,302
Related allowance	690	0
Residential real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance			2,834
TDR Balance	2,124		2,834
Residential real estate [Member] \| Accruing Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	6,368	14,582
New TDRs	0	0
Disbursements (Payments)	(46)	1,421
Charge Offs	0	0
Reclassification/Transfers In(Out)	0	201
Payoffs	0	(158)
TDR Balance	6,322	16,046
Related allowance	255	143
Residential real estate [Member] \| Nonaccrual Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	3,382	1,884
New TDRs	0	0
Disbursements (Payments)	(9)	(20)
Charge Offs	0	(70)
Reclassification/Transfers In(Out)	(2,911)	(760)
Payoffs	0	0
TDR Balance	462	1,034
Related allowance	0	0
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance			2,379
TDR Balance	2,339		2,379
Commercial real estate [Member] \| Accruing Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	6,237	9,791
New TDRs	0	0
Disbursements (Payments)	24	(25)
Charge Offs	0	(549)
Reclassification/Transfers In(Out)	0	(201)
Payoffs	0	(1,097)
TDR Balance	6,261	7,919
Related allowance	23	6
Commercial real estate [Member] \| Nonaccrual Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	346	842
New TDRs	0	0
Disbursements (Payments)	(2)	(72)
Charge Offs	(40)	(65)
Reclassification/Transfers In(Out)	(238)	0
Payoffs	0	0
TDR Balance	66	705
Related allowance	0	0
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance			448
TDR Balance	441		448
Commercial [Member] \| Accruing Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	47	95
New TDRs	0	0
Disbursements (Payments)	(2)	(9)
Charge Offs	0	0
Reclassification/Transfers In(Out)	0	0
Payoffs	0	(24)
TDR Balance	45	62
Related allowance	0	9
Commercial [Member] \| Nonaccrual Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	0	0
New TDRs	0	0
Disbursements (Payments)	0	0
Charge Offs	0	0
Reclassification/Transfers In(Out)	0	0
Payoffs	0	0
TDR Balance	0	0
Related allowance	0	0
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance			229
TDR Balance	180		229
Consumer [Member] \| Accruing Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	0	0
New TDRs	0	0
Disbursements (Payments)	0	0
Charge Offs	0	0
Reclassification/Transfers In(Out)	0	0
Payoffs	0	0
TDR Balance	0	0
Related allowance	0	0
Consumer [Member] \| Nonaccrual Troubled Debt Restructurings [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDR Balance	25	26
New TDRs	0	0
Disbursements (Payments)	(1)	(1)
Charge Offs	0	0
Reclassification/Transfers In(Out)	0	0
Payoffs	0	0
TDR Balance	24	25
Related allowance	$ 0	$ 0

Amount of disbursements to allowance reserve for credit loss arising from purchase of loan and lease portfolios.

No definition available.

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- Definition

Amount of payoffs to allowance reserve for credit loss arising from purchase of loan and lease portfolios.

+ References

No definition available.

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- Definition

Amount of addition to allowance reserve for credit loss arising from purchase of loan and lease portfolios.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

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- Definition

Amount of increase (decrease) of allowance reserve for credit loss.

+ References

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- Definition

Amount, after recoveries, of loans and leases that have been written-off.

+ References

No definition available.

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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=35738203&loc=d3e5212-111524

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ 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 210.9-03.7(d))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

-Section 03

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-Subparagraph d

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

-Subsection 1

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