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Subsequent Events - Additional Information (Detail) (USD $) | 6 Months Ended |  | 0 Months Ended |  | 0 Months Ended |  | 0 Months Ended
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Jun. 30, 2014 | Dec. 31, 2013 | Jul. 20, 2014 Subsequent Event | Jul. 20, 2014 Subsequent Event | Aug. 06, 2014 Subsequent Event CresCom Bank Branch | Aug. 06, 2014 Subsequent Event CresCom Bank | Aug. 06, 2014 Subsequent Event CresCom Bank Southeastern, coastal region of North Carolina Branch | Aug. 06, 2014 Subsequent Event CresCom Bank South Carolina Branch
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Number of branches sold |  |  |  |  | 13 |  | 10 | 3
Total deposit of branches to be sold | $ 1,923,104,000 | $ 1,950,742,000 |  |  |  | $ 230,000,000 |  |
Total loans of branches to be sold | 1,735,513,000 | 1,686,644,000 |  |  |  | 59,000,000 |  |
FHLB convertible advance, prepaid amount |  |  |  | 35,000,000 |  |  |  |
FHLB convertible advance | 50,000,000 |  |  |  |  |  |  |
FHLB convertible advance, due date | 2017-05 |  |  |  |  |  |  |
FHLB convertible advance, interest rate | 4.21% |  |  |  |  |  |  |
FHLB convertible advance, prepayment pre-tax penalty |  |  | $ 3,050,000 |  |  |  |  |

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- Definition Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Due Date, Month and Year + References No definition available. + Details
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- Definition Federal Home Loan Bank Advances General Debt Obligations Disclosures Penalties + References No definition available. + Details
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- Definition Number Of Branches to be Sold + References No definition available. + Details
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- Definition Prepayment Of Federal Home Loan Bank Advances + References No definition available. + Details
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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 + Details
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- Definition States the weighted average interest rate applicable to the advances from the Federal Home Loan Bank outstanding as of the Balance Sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Industry Guide -Number 3 -Section VII -Subsection 1 + Details
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- Definition Amount after allowance and 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 and loans held for sale. + References Reference 1: 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=28367877&loc=d3e4428-111522 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) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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