| **Employee Benefit Plan (Tables)**                           | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| **Compensation and Retirement Disclosure [Abstract]**        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| Summary of Components of Net Periodic Pension Cost (Benefit) | A summary of the components of net periodic pension cost is as follows: Three Months Ended  September 30, Nine Months Ended  September 30, 2013 2012 2013 2012Service cost$— $230 $224 $655Interest cost 172 164 484 554Expected return on assets138 (553) (580) (1,778)Amortization of prior service costs— 110 — 328Amortization of loss50 5 248 5Settlement charges212 147 606 1,110Net periodic pension cost $572 $103 $982 $874 |
| Schedule of Assumptions Used                                 | The following table includes the assumptions used to develop net periodic pension cost and benefit obligations:  September 30, 2013 December 31, 2012 September 30 2012 December 31, 2011Discount rate4.15% 3.27% 3.19% 4.19%Expected long term rate on plan assets—% 4.75% 4.75% 5.00%Rate of compensation increaseN/A N/A 3.75% 3.75%                                                                                                                                                                                          |

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| - Definition
Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets.
+ 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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