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.

Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 114

-Paragraph 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 8, 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

-Section 563c.102

-Paragraph 8

-Subparagraph a(ii)

-Chapter V

-Subsection I

-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

-Subsection 1

+ Details

Loans and Allowance - Allowance for Credit Losses and Loan Portfolio by Loan Segment (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance balances - Individually evaluated for impairment	$ 4,112		$ 4,243
Allowance balances - Collectively evaluated for impairment	63,654		65,123
Allowance balances - Loans acquired with deteriorated credit quality	436
Total Allowance for Loan Losses	68,202	68,537	69,366	70,143	70,369	70,898
Loan balances - Individually evaluated for impairment	53,073		68,099
Loan balances - Collectively evaluated for impairment	2,855,767		2,821,358
Loan balances - Loans acquired with deteriorated credit quality	11,240		12,752
Loans	2,920,080		2,902,209
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance balances - Individually evaluated for impairment	1,353		1,628
Allowance balances - Collectively evaluated for impairment	24,941		24,285
Allowance balances - Loans acquired with deteriorated credit quality	269
Total Allowance for Loan Losses	26,563	25,371	25,913	17,791	15,574	17,731
Loan balances - Individually evaluated for impairment	10,114		14,190
Loan balances - Collectively evaluated for impairment	789,354		765,707
Loan balances - Loans acquired with deteriorated credit quality	960		1,710
Loans	800,428		781,607
Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance balances - Individually evaluated for impairment	2,754		2,565
Allowance balances - Collectively evaluated for impairment	20,708		24,138
Allowance balances - Loans acquired with deteriorated credit quality	143
Total Allowance for Loan Losses	23,605	24,978	26,703	35,133	37,907	37,919
Loan balances - Individually evaluated for impairment	36,690		45,394
Loan balances - Collectively evaluated for impairment	1,328,427		1,309,912
Loan balances - Loans acquired with deteriorated credit quality	9,553		10,015
Loans	1,374,670		1,365,321
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance balances - Collectively evaluated for impairment	2,885		2,593
Total Allowance for Loan Losses	2,885	2,689	2,593	2,431	2,805	2,902
Loan balances - Collectively evaluated for impairment	79,258		75,748
Loan balances - Loans acquired with deteriorated credit quality
Loans	79,258		75,748
Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance balances - Individually evaluated for impairment	5		50
Allowance balances - Collectively evaluated for impairment	15,084		14,107
Allowance balances - Loans acquired with deteriorated credit quality	24
Total Allowance for Loan Losses	15,113	15,479	14,157	14,788	14,083	12,343
Loan balances - Individually evaluated for impairment	6,269		8,515
Loan balances - Collectively evaluated for impairment	656,900		667,401
Loan balances - Loans acquired with deteriorated credit quality	727		1,027
Loans	663,896		676,943
Finance Leases
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance balances - Collectively evaluated for impairment	36
Total Allowance for Loan Losses	36	20				3
Loan balances - Collectively evaluated for impairment	1,828		2,590
Loan balances - Loans acquired with deteriorated credit quality
Loans	$ 1,828		$ 2,590