No definition available.

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

+ Details

Name:	us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

+ Details

Name:	us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 3: 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 4: 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 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

+ Details

Name:	us-gaap_LoansAndLeasesReceivableAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes 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 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_NotesReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

+ Details

Name:	us-gaap_ProvisionForLoanLeaseAndOtherLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnallocatedFinancingReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityAxis=us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans (Schedule of the Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Schedule of allowance and recorded investment related to financing receivables segregated by portfolio segment
Beginning balance	$ 70,318	$ 75,256	$ 73,328	$ 75,683
Provision for loan losses	3,000	1,500	4,500	3,000
Charge-offs	(3,620)	(2,724)	(9,078)	(5,867)
Recoveries	1,808	909	2,756	2,125
Ending balance	71,506	74,941	71,506	74,941
Allowance for loan losses
Loans individually evaluated for impairment related to allowance for loan losses					$ 3,217	$ 6,389	$ 1,581
Loans collectively evaluated for impairment related to allowance for loan losses					68,289	66,939	73,360
Total	70,318	75,256	73,328	75,683	71,506	73,328	74,941
Loans individually evaluated for impairment related to recorded investment (loan balance)					102,249	121,416	106,769
Loans collectively evaluated for impairment related to recorded investment (loan balance)					6,276,685	5,686,518	5,244,241
Total loans					7,647,269	7,271,147	7,034,743
Commercial Loan Portfolio [Member]
Schedule of allowance and recorded investment related to financing receivables segregated by portfolio segment
Beginning balance	44,668	46,819	47,234	44,156
Provision for loan losses	900	(626)	1,900	2,967
Charge-offs	(2,542)	(915)	(6,438)	(2,419)
Recoveries	1,202	249	1,532	823
Ending balance	44,228	45,527	44,228	45,527
Allowance for loan losses
Loans individually evaluated for impairment related to allowance for loan losses					3,054	6,197	1,321
Loans collectively evaluated for impairment related to allowance for loan losses					41,174	41,037	44,206
Total	44,668	46,819	47,234	44,156	44,228	47,234	45,527
Loans individually evaluated for impairment related to recorded investment (loan balance)					81,504	100,379	85,799
Loans collectively evaluated for impairment related to recorded investment (loan balance)					3,346,477	3,030,342	2,737,909
Total loans					4,396,882	4,250,117	4,110,698
Consumer Loan Portfolio [Member]
Schedule of allowance and recorded investment related to financing receivables segregated by portfolio segment
Beginning balance	25,650	24,579	26,094	28,803
Provision for loan losses	2,100	(109)	2,600	(3,336)
Charge-offs	(1,078)	(1,809)	(2,640)	(3,448)
Recoveries	606	660	1,224	1,302
Ending balance	27,278	23,321	27,278	23,321
Allowance for loan losses
Loans individually evaluated for impairment related to allowance for loan losses					163	192	260
Loans collectively evaluated for impairment related to allowance for loan losses					27,115	25,902	23,061
Total	25,650	24,579	26,094	28,803	27,278	26,094	23,321
Loans individually evaluated for impairment related to recorded investment (loan balance)					20,745	21,037	20,970
Loans collectively evaluated for impairment related to recorded investment (loan balance)					2,930,208	2,656,176	2,506,332
Total loans					3,250,387	3,021,030	2,924,045
Unallocated [Member]
Schedule of allowance and recorded investment related to financing receivables segregated by portfolio segment
Beginning balance	0	3,858	0	2,724
Provision for loan losses	0	2,235	0	3,369
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	0	6,093	0	6,093
Allowance for loan losses
Loans individually evaluated for impairment related to allowance for loan losses					0	0	0
Loans collectively evaluated for impairment related to allowance for loan losses					0	0	6,093
Total	$ 0	$ 3,858	$ 0	$ 2,724	0	0	6,093
Loans individually evaluated for impairment related to recorded investment (loan balance)					0	0	0
Loans collectively evaluated for impairment related to recorded investment (loan balance)					0	0	0
Total loans					0	0	0
Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loan losses
Financing Receivable, Allowance for Credit Losses					0	0	0
Loans acquired with deteriorated credit quality					1,268,335	1,463,213	1,683,733
Receivables Acquired with Deteriorated Credit Quality [Member] \| Commercial Loan Portfolio [Member]
Allowance for loan losses
Financing Receivable, Allowance for Credit Losses					0	0	0
Loans acquired with deteriorated credit quality					968,901	1,119,396	1,286,990
Receivables Acquired with Deteriorated Credit Quality [Member] \| Consumer Loan Portfolio [Member]
Allowance for loan losses
Financing Receivable, Allowance for Credit Losses					0	0	0
Loans acquired with deteriorated credit quality					299,434	343,817	396,743
Receivables Acquired with Deteriorated Credit Quality [Member] \| Unallocated [Member]
Allowance for loan losses
Financing Receivable, Allowance for Credit Losses					0	0	0
Loans acquired with deteriorated credit quality					$ 0	$ 0	$ 0