Allowance Balances [Abstract]

No definition available.

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- Definition

Loan Balance [Abstract]

+ References

No definition available.

+ Details

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- Definition

Loans and Leases Receivable

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

+ Details

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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

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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- Definition

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

+ References

+ Details

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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=66008989&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=66008989&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=6379141&loc=d3e15032-111544

+ Details

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

- Details

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- Details

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Loans and Allowance - Allowance for Credit Losses and Loan Portfolio by Loan Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Allowance Balances:
Individually evaluated for impairment	$ 1,182	$ 888
Collectively evaluated for impairment	67,043	65,149
Total Allowance for Loan Losses	68,225	66,037	$ 62,086	$ 62,453
Loan Balance [Abstract]
Individually evaluated for impairment	29,467	30,579
Collectively evaluated for impairment	5,213,049	5,065,844
Loans	5,274,909	5,139,645
Loans Acquired with Deteriorated Credit Quality
Allowance Balances:
Total Allowance for Loan Losses
Loan Balance [Abstract]
Loans	32,393	43,222
Commercial
Allowance Balances:
Individually evaluated for impairment	36	37
Collectively evaluated for impairment	28,488	27,659
Total Allowance for Loan Losses	28,524	27,696	26,264	26,478
Loan Balance [Abstract]
Individually evaluated for impairment	3,314	4,762
Collectively evaluated for impairment	1,573,619	1,520,981
Loans	1,580,070	1,532,396
Commercial \| Loans Acquired with Deteriorated Credit Quality
Allowance Balances:
Total Allowance for Loan Losses
Loan Balance [Abstract]
Loans	3,137	6,653
Commercial Real Estate
Allowance Balances:
Individually evaluated for impairment	829	553
Collectively evaluated for impairment	23,491	23,108
Total Allowance for Loan Losses	24,320	23,661	22,317	22,145
Loan Balance [Abstract]
Individually evaluated for impairment	21,701	21,358
Collectively evaluated for impairment	2,405,977	2,315,686
Loans	2,455,362	2,371,765
Commercial Real Estate \| Loans Acquired with Deteriorated Credit Quality
Allowance Balances:
Total Allowance for Loan Losses
Loan Balance [Abstract]
Loans	27,684	34,721
Consumer
Allowance Balances:
Individually evaluated for impairment
Collectively evaluated for impairment	3,120	2,923
Total Allowance for Loan Losses	3,120	2,923	2,647	2,689
Loan Balance [Abstract]
Individually evaluated for impairment	8	9
Collectively evaluated for impairment	77,582	77,470
Loans	77,590	77,479
Consumer \| Loans Acquired with Deteriorated Credit Quality
Allowance Balances:
Total Allowance for Loan Losses
Loan Balance [Abstract]
Loans
Residential
Allowance Balances:
Individually evaluated for impairment	317	298
Collectively evaluated for impairment	11,942	11,457
Total Allowance for Loan Losses	12,259	11,755	10,856	11,139
Loan Balance [Abstract]
Individually evaluated for impairment	4,444	4,450
Collectively evaluated for impairment	1,155,610	1,151,396
Loans	1,161,626	1,157,694
Residential \| Loans Acquired with Deteriorated Credit Quality
Allowance Balances:
Total Allowance for Loan Losses
Loan Balance [Abstract]
Loans	1,572	1,848
Finance Leases
Allowance Balances:
Individually evaluated for impairment
Collectively evaluated for impairment	2	2
Total Allowance for Loan Losses	2	2	$ 2	$ 2
Loan Balance [Abstract]
Individually evaluated for impairment
Collectively evaluated for impairment	261	311
Loans	261	311
Finance Leases \| Loans Acquired with Deteriorated Credit Quality
Allowance Balances:
Total Allowance for Loan Losses
Loan Balance [Abstract]
Loans