| **Derivatives and Financial Instruments (Tables)**                   | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| **Derivative Instruments, Gain (Loss) [Line Items]**                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Schedule of Derivative Instruments, Gain (Loss)                      | The table below provides data about the amount of gains and losses related to derivative instruments designated as hedges included in the “Accumulated other comprehensive loss” section of “Shareholders’ Equity” on the COB’s Consolidated Balance Sheets, and in “Other income” in the COB’s Consolidated Statements of Operations:   Gain, Net of Tax Recognized in Income  For Twelve months ended(dollars in thousands) December 31, 2013 December 31, 2012 December 31, 2011Derivatives designated as hedging instruments:      Interest rate swap contracts - FHLB advances — — 819                                             |
| Not designated as hedges [Member] | Continuing operations [Member]   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| **Derivative Instruments, Gain (Loss) [Line Items]**                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Schedule of Derivative Instruments, Gain (Loss)                      |   Gain (Loss) Recognized  For Twelve Months Ended  December 31, 2013 December 31, 2012 December 31, 2011Derivatives not designated as hedging instruments:      Mortgage loan rate lock commitments $4 $152 55Mortgage loan forward sales (218) 52 (44)Total $(214) $204 $11                                                                                                                                                                                                                                                                                                                                                                                                          |
| Not designated as hedges [Member] | Discontinued operations [Member] |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| **Derivative Instruments, Gain (Loss) [Line Items]**                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Schedule of Derivative Instruments, Gain (Loss)                      | The table below provides data about the amount of gains and losses recognized in income on derivative instruments not designated as hedging instruments: (dollars in thousands) Gain/(Loss), Net of Tax Recognized in Income  For the Twelve Months Ended  December 31, 2013 December 31, 2012 December 31, 2011Derivatives not designated as hedging instruments:      Mortgage loan rate lock commitments (1) $— $— $—Mortgage loan forward sales and MBS (1) — — (44)Total $— $— $(44) (1)Recognized in “Net loss from discontinued operations” in the Company’s Consolidated Statements of Operations. |

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| - Definition
Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959
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