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Activity in Accretable Yield Related to PCI loans, by Acquisition (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, accretable Yield |  |  |
Accretable yield, Beginning Balance | $ 23,793 | $ 15,640 | $ 24,243
Additions | 2 | 293 | 429
Accretion | (9,171) | (8,302) | (8,247)
Reclassifications from (to) nonaccretable difference | 7,847 | 18,341 | 3,300
Other changes, net | 7,227 | (2,179) | (4,085)
Accretable yield, Ending Balance | 29,698 | 23,793 | 15,640
Peoples |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, accretable Yield |  |  |
Accretable yield, Beginning Balance | 4,745 | 5,294 | 2,342
Additions |  | 267 | 148
Accretion | (2,712) | (2,147) | (1,840)
Reclassifications from (to) nonaccretable difference | 1,283 | 1,912 | 6,155
Other changes, net | 273 | (581) | (1,511)
Accretable yield, Ending Balance | 3,589 | 4,745 | 5,294
Waccamaw Bank |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, accretable Yield |  |  |
Accretable yield, Beginning Balance | 19,048 | 10,338 | 21,886
Additions | 2 | 26 | 281
Accretion | (6,459) | (6,118) | (6,288)
Reclassifications from (to) nonaccretable difference | 6,564 | 16,400 | (2,967)
Other changes, net | 6,954 | (1,598) | (2,574)
Accretable yield, Ending Balance | $ 26,109 | 19,048 | 10,338
Other |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, accretable Yield |  |  |
Accretable yield, Beginning Balance |  | 8 | 15
Accretion |  | (37) | (119)
Reclassifications from (to) nonaccretable difference |  | $ 29 | 112
Accretable yield, Ending Balance |  |  | $ 8

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- Definition Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Other Changes, Net + 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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