No definition available.

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- 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
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- 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
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Balance Type:	credit
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- Definition

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

+ References

+ Details

Name:	us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
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- Definition

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

+ References

+ Details

Name:	us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
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Data Type:	xbrli:monetaryItemType
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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 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&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=84173941&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 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

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=82894903&loc=d3e15032-111544

+ Details

Name:	us-gaap_LoansAndLeasesReceivableAllowance
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Balance Type:	credit
Period Type:	instant

- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. 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=82891408&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

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Period Type:	instant

- Details

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- Details

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Allowance for Loan Losses and Credit Quality of Loans, Allowance for Loan Losses and Recorded Investment in Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Allowance for loan losses	$ 68,350	$ 66,600	$ 65,200	$ 65,668	$ 64,568	$ 63,018
Allowance for loans individually evaluated for impairment	30		1,517
Allowance for loans collectively evaluated for impairment	68,320		63,683
Ending balance of loans	6,466,934		6,198,057
Commercial Loans [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Allowance for loan losses	25,554	24,428	25,444	26,611	25,222	25,545
Allowance for loans individually evaluated for impairment	30		1,517
Allowance for loans collectively evaluated for impairment	25,524		23,927
Ending balance of loans	2,962,287		2,786,002
Consumer Loans [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Allowance for loan losses	36,187	35,523	33,375	32,401	31,471	29,253
Allowance for loans individually evaluated for impairment	0		0
Allowance for loans collectively evaluated for impairment	36,187		33,375
Ending balance of loans	2,202,070		2,149,441
Residential Real Estate Mortgages [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Allowance for loan losses	6,609	$ 6,649	6,381	$ 6,379	$ 7,875	$ 7,960
Allowance for loans individually evaluated for impairment	0		0
Allowance for loans collectively evaluated for impairment	6,609		6,381
Ending balance of loans	1,302,577		1,262,614
Originated Loans [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Ending balance of loans	6,045,111		5,697,963
Ending balance of loans individually evaluated for impairment	19,736		27,669
Ending balance of loans collectively evaluated for impairment	6,025,375		5,670,294
Originated Loans [Member] \| Commercial Loans [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Ending balance of loans	2,765,843		2,548,384
Ending balance of loans individually evaluated for impairment	4,855		13,070
Ending balance of loans collectively evaluated for impairment	2,760,988		2,535,314
Originated Loans [Member] \| Consumer Loans [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Ending balance of loans	2,154,084		2,086,436
Ending balance of loans individually evaluated for impairment	8,307		8,488
Ending balance of loans collectively evaluated for impairment	2,145,777		2,077,948
Originated Loans [Member] \| Residential Real Estate Mortgages [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Ending balance of loans	1,125,184		1,063,143
Ending balance of loans individually evaluated for impairment	6,574		6,111
Ending balance of loans collectively evaluated for impairment	1,118,610		1,057,032
Acquired Loans [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Ending balance of loans	421,823		500,094
Ending balance of loans individually evaluated for impairment			1,205
Ending balance of loans collectively evaluated for impairment	421,823		498,889
Acquired Loans [Member] \| Commercial Loans [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Ending balance of loans	196,444		237,618
Ending balance of loans individually evaluated for impairment			1,205
Ending balance of loans collectively evaluated for impairment	196,444		236,413
Acquired Loans [Member] \| Consumer Loans [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Ending balance of loans	47,986		63,005
Ending balance of loans individually evaluated for impairment			0
Ending balance of loans collectively evaluated for impairment	47,986		63,005
Acquired Loans [Member] \| Residential Real Estate Mortgages [Member]
Allowance for loan losses and recorded investment by portfolio segment [Abstract]
Ending balance of loans	177,393		199,471
Ending balance of loans individually evaluated for impairment			0
Ending balance of loans collectively evaluated for impairment	$ 177,393		$ 199,471