| **Employee Benefit Plans (Tables)**                                                                                    | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
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| Pension Plan [Member]                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Schedule of Change in Benefit Obligation, Plan Assets, Funded Status and Amounts Recognized in Consolidated Statements | The following table sets forth the plan’s change in benefit obligation, plan assets and the funded status of the pension plan, using a December 31 measurement date, and amounts recognized in the consolidated statements as of December 31: (dollars in thousands)      2012 2011Change in Benefit Obligation    Benefit obligation at beginning of year $14,597 $12,529Service cost — —Interest cost 668 712Net actuarial loss 758 1,970Benefits paid (681) (614)Benefit obligation at end of year $15,342 $14,597Change in Plan Assets    Fair value of plan assets at beginning of year $9,234 $8,696Actual return on plan assets 1,017 352Employer contributions 2,800 800Benefits paid (681) (614)Fair value of plan assets at December 31 $12,370 $9,234Funded Status at End of Year $(2,972) $(5,363)Amounts Recognized in the Consolidated Balance Sheets    Other Liabilities $(2,972) $(5,363)Amounts Recognized in Accumulated Other Comprehensive Income    Net actuarial loss $7,312 $7,290Net amount recognized $7,312 $7,290Weighted-Average Allocation of Plan Assets at End of Year    Equity securities 62% 64%Debt securities 36 33Cash and cash equivalents 2 1Fixed income funds — 2Total 100% 100%Weighted-Average Plan Assumptions at End of Year    Discount rate 4.25% 4.75%Expected long-term rate of return on plan assets 8.00% 8.00%Rate of increase in compensation levels 5.50% 5.50% |
| Schedule of Amounts Recognized in Net Periodic Benefit Cost and Other Comprehensive Income (Loss)                      | Components of net periodic pension cost/(income) and other amounts recognized in other comprehensive income are as follows: (dollars in thousands) 2012 2011 2010Net Periodic Pension Cost/(Income)      Service cost $— $— $181Interest cost 668 712 687Expected return on plan assets (804) (690) (595)Amortization of prior service cost — — 1Amortization of net actuarial loss 524 411 367Total pension cost $388 $433 $641Other Changes in Plan Assets and Benefit Obligations      Recognized in Other Comprehensive Income:      Net actuarial loss/(gain) $22 $1,897 $(262)Amortization of prior service credit — — (1)Total recognized in other comprehensive loss/(income) 22 1,897 (263)Total Recognized in Net Periodic Pension Cost and Other Comprehensive Loss $410 $2,330 $378                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Schedule of Fair Value of Plan Assets by Major Asset Category                                                          | The following table provides the fair values of investments held in the pension plan by major asset category:December 31, 2012(dollars in thousands) FairValue QuotedPrices inActiveMarketsforIdenticalAssets(Level 1) SignificantOtherObservableInputs(Level 2)Equity securities $7,752 $7,752 $—Debt securities 4,429 4,429 —Other 189 189 —Total fair value of pension assets $12,370 $12,370 $—December 31, 2011(dollars in thousands) FairValue QuotedPrices inActiveMarketsforIdenticalAssets(Level 1) SignificantOtherObservableInputs(Level 2)Equity securities $5,912 $5,912 $—Debt securities 3,191 — 3,191Other 131 131 —Total fair value of pension assets $9,234 $6,043 $3,191                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| SERP [Member]                                                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Schedule of Change in Benefit Obligation, Plan Assets, Funded Status and Amounts Recognized in Consolidated Statements | The following table sets forth the plan’s change in benefit obligation, plan assets and the funded status of the SERP plan, using a December 31 measurement date, and amounts recognized in the consolidated statements as of December 31: (dollars in thousands)      2012 2011Change in Benefit Obligation    Benefit obligation at beginning of year $1,980 $2,057Service cost — —Interest cost 107 137Amendments to plan — —Net actuarial loss/(gain) (457) 60Benefits paid (285) (274)Benefit obligation at end of year $1,345 $1,980Change in Plan Assets    Employer contributions $285 $274Benefits paid (285) (274)Fair value of plan assets at end of year $— $—Funded Status at December 31 $(1,345) $(1,980)Amounts Recognized in the Consolidated Balance Sheets    Other Liabilities $1,345 $1,980Amounts Recognized in Accumulated Other Comprehensive Loss    Net actuarial gain $(1,002) $(594)Prior service cost 155 187Net amount recognized $(847) $(407)Weighted-Average Plan Assumption at End of Year:    Discount rate 7.00% 4.75%                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Schedule of Amounts Recognized in Net Periodic Benefit Cost and Other Comprehensive Income (Loss)                      | Components of net periodic SERP cost and other amounts recognized in other comprehensive loss are as follows: (dollars in thousands) 2012 2011 2010Net Periodic SERP Cost      Service cost $— $— $189Interest cost 107 137 120Amortization of prior service cost 31 48 48Amortization of net actuarial gain (48) (108) (37)Net periodic SERP cost $90 $77 $320Other Changes in Plan Assets and Benefit Obligations      Recognized in Other Comprehensive Income      Net actuarial loss/(gain) $(409) $168 $(621)Amortization of prior service credit (31) (48) (48)Total recognized in other comprehensive loss/(income) (440) 120 (669)Total Recognized in Net Periodic SERP (Income)/Cost and Other Comprehensive Income/(Loss) $(350) $197 $(349)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Other Postretirement Defined Benefit Plans [Member]                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Schedule of Change in Benefit Obligation, Plan Assets, Funded Status and Amounts Recognized in Consolidated Statements | The following table sets forth the plans change in benefit obligation, plan assets and the funded status of the postretirement plans, using a December 31 measurement date, and amounts recognized in the consolidated statements as of December 31: (dollars in thousands)      2012 2011Change in Benefit Obligation    Benefit obligation at beginning of year $1,459 $1,670Service cost — —Interest cost 63 74Net actuarial (gain)/loss (84) (224)Plan participant contributions 79 80Benefits paid (140) (141)Benefit obligation at end of year $1,377 $1,459Change in Plan Assets    Employer contributions $61 $61Plan participant contributions 79 80Benefits paid (140) (141)Fair value of plan assets at end of year $— $—Funded Status at December 31 $(1,377) $(1,459)Amounts Recognized in the Consolidated Balance Sheets    Other Liabilities $1,377 $1,459Amounts Recognized in Accumulated Other Comprehensive Loss    Net actuarial loss $86 $169Prior service credit (21) (25)Net amount recognized $65 $144Weighted-Average Plan Assumption at End of Year:    Discount rate 4.25% 4.75%                                                                                                                                                                                                                                                                                                                                                                                           |
| Schedule of Amounts Recognized in Net Periodic Benefit Cost and Other Comprehensive Income (Loss)                      | Components of net postretirement benefit cost and other amounts recognized in other comprehensive income are as follows: (dollars in thousands) 2012 2011 2010Net Periodic Postretirement Benefit Cost      Service cost $— $— $18Interest cost 63 74 90Amortization of prior service credit (4) (4) (4)Amortization of net actuarial loss — — 22Net periodic postretirement benefit cost $59 $70 $126Other Changes in Plan Assets and Benefit Obligations      Recognized in Other Comprehensive Income      Net actuarial (gain)/loss $(84) $(223) $6Amortization of prior service cost 4 4 4Total recognized in other comprehensive (income)/loss (80) (219) 10Total Recognized in Net Periodic Postretirement Benefit Cost and Other Comprehensive (Income)/Loss $(21) $(149) $136                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |

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| - Definition
Schedule of Defined Benefit Plan Amounts Recognized in Net Periodic Benefit Cost and Other Comprehensive Income (Loss) [Table Text Block]
+ References
No definition available.
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| - Definition
Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans.  This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall.
+ References
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| - Definition
Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.
+ References
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