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Loans and Allowance for Loan Losses (Details 6) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012
Activity in allowance for loan losses and the recorded investments in loans |  |  |
Beginning balance | $ 28,677,000 | $ 36,532,000 |
Provision for loan losses | (1,500,000) | 0 |
Charge-offs | (2,415,000) | (7,576,000) |
Recoveries | 1,273,000 | 1,987,000 |
Ending balance | 26,035,000 | 30,943,000 |
Ending balance: individually evaluated for impairment | 14,893,000 | 15,023,000 |
Ending balance: collectively evaluated for impairment | 11,142,000 | 15,920,000 |
Ending balance | 1,022,956,000 | 1,051,674,000 | 1,041,189,000
Ending balance: individually evaluated for impairment | 51,700,000 | 63,498,000 |
Ending balance: collectively evaluated for impairment | 971,256,000 | 988,176,000 |
Commercial Loans [Member] |  |  |
Activity in allowance for loan losses and the recorded investments in loans |  |  |
Beginning balance | 26,043,000 | 33,431,000 |
Provision for loan losses | (1,164,000) | (99,000) |
Charge-offs | (2,412,000) | (7,464,000) |
Recoveries | 1,250,000 | 1,940,000 |
Ending balance | 23,717,000 | 27,808,000 |
Ending balance: individually evaluated for impairment | 14,616,000 | 14,611,000 |
Ending balance: collectively evaluated for impairment | 9,101,000 | 13,197,000 |
Ending balance | 948,964,000 | 976,452,000 |
Ending balance: individually evaluated for impairment | 49,636,000 | 61,320,000 |
Ending balance: collectively evaluated for impairment | 899,328,000 | 915,132,000 |
Retail Loans [Member] |  |  |
Activity in allowance for loan losses and the recorded investments in loans |  |  |
Beginning balance | 2,645,000 | 3,019,000 |
Provision for loan losses | (363,000) | 94,000 |
Charge-offs | (3,000) | (112,000) |
Recoveries | 23,000 | 47,000 |
Ending balance | 2,302,000 | 3,048,000 |
Ending balance: individually evaluated for impairment | 277,000 | 412,000 |
Ending balance: collectively evaluated for impairment | 2,025,000 | 2,636,000 |
Ending balance | 73,992,000 | 75,222,000 |
Ending balance: individually evaluated for impairment | 2,064,000 | 2,178,000 |
Ending balance: collectively evaluated for impairment | 71,928,000 | 73,044,000 |
Unallocated [Member] |  |  |
Activity in allowance for loan losses and the recorded investments in loans |  |  |
Beginning balance | (11,000) | 82,000 |
Provision for loan losses | 27,000 | 5,000 |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Ending balance | 16,000 | 87,000 |
Ending balance: individually evaluated for impairment | 0 | 0 |
Ending balance: collectively evaluated for impairment | 16,000 | 87,000 |
Ending balance |  |  |
Ending balance: individually evaluated for impairment |  |  |
Ending balance: collectively evaluated for impairment |  |  |

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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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 (c)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- 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 OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph e -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 116 -IssueDate 2006-05-01 -Chapter 8 -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 3: 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=7512638&loc=d3e5074-111524 Reference 4: 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 5: 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. + Details
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