XML 127 R108.htm IDEA: XBRL DOCUMENT v3.8.0.1

Fair Value Measurements Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Securities available for sale	$ 2,547,956	$ 2,559,227
Equity securities
Securities available for sale	918	24,526
U.S. Government sponsored agency securities
Securities available for sale	5,938	134
State and municipal securities
Securities available for sale	408,949	391,641
Corporate debt securities
Securities available for sale	97,309	109,409
Collateralized mortgage obligations
Securities available for sale	602,623	593,860
Residential mortgage-backed securities
Securities available for sale	1,120,796	1,317,838
Residential mortgage-backed securities
Securities available for sale	212,755	24,563
Auction rate securities
Securities available for sale	98,668	97,256
Fair Value, Measurements, Recurring
Mortgage loans held for sale	31,530	28,697
Securities available for sale	2,547,956	2,559,227
Other financial assets	63,990	61,592
Total assets	2,643,476	2,649,516
Other financial liabilities	58,371	58,766
Fair Value, Measurements, Recurring | Equity securities
Securities available for sale	918	24,526
Fair Value, Measurements, Recurring | U.S. Government sponsored agency securities
Securities available for sale	5,938	134
Fair Value, Measurements, Recurring | State and municipal securities
Securities available for sale	408,949	391,641
Fair Value, Measurements, Recurring | Corporate debt securities
Securities available for sale	97,309	109,409
Fair Value, Measurements, Recurring | Collateralized mortgage obligations
Securities available for sale	602,623	593,860
Fair Value, Measurements, Recurring | Residential mortgage-backed securities
Securities available for sale	1,120,796	1,317,838
Fair Value, Measurements, Recurring | Residential mortgage-backed securities
Securities available for sale	212,755	24,563
Fair Value, Measurements, Recurring | Auction rate securities
Securities available for sale	98,668	97,256
Fair Value, Measurements, Recurring | Level 1
Mortgage loans held for sale	0	0
Securities available for sale	918	24,526
Other financial assets	19,451	17,111
Total assets	20,369	41,637
Other financial liabilities	19,357	17,032
Fair Value, Measurements, Recurring | Level 1 | Equity securities
Securities available for sale	918	24,526
Fair Value, Measurements, Recurring | Level 1 | U.S. Government sponsored agency securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | State and municipal securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Corporate debt securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Collateralized mortgage obligations
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Residential mortgage-backed securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Residential mortgage-backed securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Auction rate securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 2
Mortgage loans held for sale	31,530	28,697
Securities available for sale	2,444,613	2,434,573
Other financial assets	44,539	44,481
Total assets	2,520,682	2,507,751
Other financial liabilities	39,014	41,734
Fair Value, Measurements, Recurring | Level 2 | Equity securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 2 | U.S. Government sponsored agency securities
Securities available for sale	5,938	134
Fair Value, Measurements, Recurring | Level 2 | State and municipal securities
Securities available for sale	408,949	391,641
Fair Value, Measurements, Recurring | Level 2 | Corporate debt securities
Securities available for sale	93,552	106,537
Fair Value, Measurements, Recurring | Level 2 | Collateralized mortgage obligations
Securities available for sale	602,623	593,860
Fair Value, Measurements, Recurring | Level 2 | Residential mortgage-backed securities
Securities available for sale	1,120,796	1,317,838
Fair Value, Measurements, Recurring | Level 2 | Residential mortgage-backed securities
Securities available for sale	212,755	24,563
Fair Value, Measurements, Recurring | Level 2 | Auction rate securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3
Mortgage loans held for sale	0	0
Securities available for sale	102,425	100,128
Other financial assets	0	0
Total assets	102,425	100,128
Other financial liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 | Equity securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | U.S. Government sponsored agency securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | State and municipal securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | Corporate debt securities
Securities available for sale	3,757	2,872
Fair Value, Measurements, Recurring | Level 3 | Collateralized mortgage obligations
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | Residential mortgage-backed securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | Residential mortgage-backed securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | Auction rate securities
Securities available for sale	$ 98,668	$ 97,256

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

+ Details

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

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562

+ Details

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

X

- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

+ Details

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

X

- Definition

Fair value portion of mortgage loans held-for-sale.

+ References

No definition available.

+ Details

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

X

- Definition

Fair value portion of other assets.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CollateralizedMortgageObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_AuctionRateSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: