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.

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=6375948&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

Loans Acquired impaired and non-impaired loans (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Apr. 12, 2013 Acquired Loans [Member]	Apr. 12, 2013 C&I Acquired Loans [Member]	Apr. 12, 2013 CRE Acquired Loans [Member]	Apr. 12, 2013 Construction Acquired Loans [Member]	Apr. 12, 2013 Total commercial Acquired Loans [Member]	Apr. 12, 2013 Residential mortgages Acquired Loans [Member]	Apr. 12, 2013 Installment Acquired Loans [Member]	Apr. 12, 2013 Home equity lines Acquired Loans [Member]	Apr. 12, 2013 Total consumer Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired C&I Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired CRE Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired Construction Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired Total commercial Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired Residential mortgages Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired Installment Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired Home equity lines Acquired Loans [Member]	Apr. 12, 2013 Acquired Impaired Total consumer Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired C&I Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired CRE Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired Construction Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired Total commercial Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired Residential mortgages Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired Installment Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired Home equity lines Acquired Loans [Member]	Apr. 12, 2013 Acquired Non-impaired Total consumer Acquired Loans [Member]
Acquired Impaired and Non-Impaired Loans at Acquisition Date [Line Items]
Acquired Impaired													$ 772,801	$ 62,018	$ 377,967	$ 13,399	$ 453,384	$ 233,005	$ 54,377	$ 32,035	$ 319,417
Acquired Non-impaired																						3,851,491	1,698,758	359,080	18,519	2,076,357	279,735	1,165,235	330,164	1,775,134
Acquired Loans Total	$ 14,151,953	$ 9,750,784	$ 9,371,816	$ 4,624,292	$ 1,760,776	$ 737,047	$ 31,918	$ 2,529,741	$ 512,740	$ 1,219,612	$ 362,199	$ 2,094,551