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Loans and Leases - Activity for SBA Loans Held for Sale (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward] |  |  |  |
Balance at beginning of period | $ 6,008 | $ 8,849 | $ 6,394 | $ 9,316
Originations | 18,562 | 34,474 | 37,367 | 53,667
Sales | (19,104) | (32,354) | (38,291) | (51,997)
Principal payoffs and amortization | (117) | (20) | (121) | (37)
Balance at end of period | 5,349 | 10,949 | 5,349 | 10,949
Real estate loans [Member] |  |  |  |
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward] |  |  |  |
Balance at beginning of period | 2,151 | 7,789 | 3,746 | 7,410
Originations | 10,155 | 22,130 | 20,588 | 34,763
Sales | (9,519) | (21,083) | (21,547) | (33,337)
Principal payoffs and amortization | (2) | (19) | (2) | (19)
Balance at end of period | 2,785 | 8,817 | 2,785 | 8,817
Commercial and industrial loans [Member] |  |  |  |
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward] |  |  |  |
Balance at beginning of period | 3,857 | 1,060 | 2,648 | 1,906
Originations | 8,407 | 12,344 | 16,779 | 18,904
Sales | (9,585) | (11,271) | (16,744) | (18,660)
Principal payoffs and amortization | (115) | (1) | (119) | (18)
Balance at end of period | $ 2,564 | $ 2,132 | $ 2,564 | $ 2,132

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- Definition Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward] + References No definition available. + Details
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- Definition Principal payoffs and amortization. + References No definition available. + Details
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- Definition Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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- Definition The amount of cash paid for the origination of mortgages that are held for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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- Definition The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3337-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3461-108585 + Details
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