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Activity in Accretable Yield Related to PCI loans, by Acquisition (Detail) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, accretable Yield |  |
Accretable yield, Beginning Balance | $ 23,793 | $ 15,640
Additions | 2 | 122
Accretion | (6,975) | (6,170)
Reclassifications from (to) nonaccretable difference | 3,808 | 15,202
Removals, extensions, and other events | 5,176 | (1,966)
Accretable yield, Ending Balance | 25,804 | 22,828
Peoples |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, accretable Yield |  |
Accretable yield, Beginning Balance | 4,745 | 5,294
Additions |  | 98
Accretion | (1,906) | (1,601)
Reclassifications from (to) nonaccretable difference | 583 | 1,205
Removals, extensions, and other events | (27) | (521)
Accretable yield, Ending Balance | 3,395 | 4,475
Waccamaw Bank |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, accretable Yield |  |
Accretable yield, Beginning Balance | 19,048 | 10,338
Additions | 2 | 24
Accretion | (5,069) | (4,540)
Reclassifications from (to) nonaccretable difference | 3,225 | 13,968
Removals, extensions, and other events | 5,203 | (1,445)
Accretable yield, Ending Balance | $ 22,409 | 18,345
Other |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, accretable Yield |  |
Accretable yield, Beginning Balance |  | 8
Accretion |  | (29)
Reclassifications from (to) nonaccretable difference |  | 29
Accretable yield, Ending Balance |  | $ 8

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- Definition Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Removals, Extensions, and Other Events of Loans + References No definition available. + Details
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- Definition Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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- Definition Amount of decrease from accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition Amount of additions to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition Amount of reclassification (to) from nonaccretable difference (from) to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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