Loans and Credit Quality (Details 7) (NonCovered [Member], USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	30	14
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 15,068,000	$ 11,129,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	14,701,000	11,129,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	3	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	1,904,000	881,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	772,000	0
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	91,000	124,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	91,000	124,000
Collateralized Loan Obligations [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	6	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	1,399,000	3,287,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,399,000	3,287,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	385,000	559,000
Unsecured Commercial Member [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	195,000	38,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	195,000	38,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	21,000
Asset Based [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	301,000
Cash Flow [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	2	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	566,000	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	387,000	0
Equipment Finance Commercial Financing Receivable [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	4	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	4,133,000	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	4,133,000	0
SBA Financing Receivable [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	0	238,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	238,000
Commercial Real Estate Construction Financing Receivable [Member] \| Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	2,610,000	4,927,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	2,610,000	4,927,000
Real Estate Mortgage Other Receivable [Member] \| Mortgage Loans on Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	14	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	6,074,000	2,515,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	5,886,000	2,515,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,519,000	$ 0

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524

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Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

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