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Aggregate Activity in Allowance For Loan Losses (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Beginning balance | $ 20,258 | $ 23,911 | $ 20,227 | $ 24,077
Provision for (recovery of) loan losses | 306 | (2,549) | 1,728 | 182
Benefit attributable to the FDIC indemnification asset | 75 | 110 | 29 | 451
Provision for (recovery of) loan losses charged to operations | 381 | (2,439) | 1,757 | 633
Provision for loan losses recorded through the FDIC indemnification asset | (75) | (110) | (29) | (451)
Charge-offs | (689) | (1,118) | (2,940) | (5,119)
Recoveries | 252 | 915 | 1,112 | 2,019
Net charge-offs | (437) | (203) | (1,828) | (3,100)
Ending balance | 20,127 | 21,159 | 20,127 | 21,159
Allowance Excluding Purchased Credit Impaired |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Beginning balance | 20,144 | 23,493 | 20,169 | 23,322
Provision for (recovery of) loan losses | 400 | (2,335) | 1,766 | 733
Provision for (recovery of) loan losses charged to operations | 400 | (2,335) | 1,766 | 733
Charge-offs | (689) | (1,118) | (2,940) | (5,119)
Recoveries | 252 | 915 | 1,112 | 2,019
Net charge-offs | (437) | (203) | (1,828) | (3,100)
Ending balance | 20,107 | 20,955 | 20,107 | 20,955
Purchased Credit Impaired |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Beginning balance | 114 | 418 | 58 | 755
Provision for (recovery of) loan losses | (94) | (214) | (38) | (551)
Benefit attributable to the FDIC indemnification asset | 75 | 110 | 29 | 451
Provision for (recovery of) loan losses charged to operations | (19) | (104) | (9) | (100)
Provision for loan losses recorded through the FDIC indemnification asset | (75) | (110) | (29) | (451)
Ending balance | $ 20 | $ 204 | $ 20 | $ 204

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- Definition Allowance for (Recovery of) Loan and Lease Losses + References No definition available. + Details
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- Definition (Provision) Benefit for Loan Losses + References No definition available. + Details
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- Definition Provision for (Recovery of) Loan and Lease Losses + References No definition available. + Details
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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + 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=49124121&loc=SL6953423-111524 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + 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)(3) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 Reference 2: 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 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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=49124121&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=49124121&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 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 + Details
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