Pension Plan (Details) - The funded status of the plan (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in benefit obligation:
Projected benefit obligation at beginning of year	$ 11,883,000	$ 12,450,000
Interest cost	562,000us-gaap_DefinedBenefitPlanInterestCost	495,000us-gaap_DefinedBenefitPlanInterestCost
Actuarial loss (gain)	2,764,000	(567,000)
Benefits paid	(530,000)us-gaap_DefinedBenefitPlanBenefitsPaid	(495,000)us-gaap_DefinedBenefitPlanBenefitsPaid
Projected benefit obligation at end of year	14,679,000	11,883,000
Change in plan assets:
Fair value of plan assets at beginning of year	7,077,000	6,019,000
Actual return on plan assets	441,000	884,000
Company contributions	958,000	669,000
Benefits paid	(530,000)us-gaap_DefinedBenefitPlanBenefitsPaid	(495,000)us-gaap_DefinedBenefitPlanBenefitsPaid
Fair value of plan assets at end of year	7,946,000	7,077,000
Funded status (underfunded)	(6,733,000)	(4,806,000)
Amounts recognized in other accumulated comprehensive loss:
Net actuarial loss	$ 7,449,000	$ 4,886,000	$ 6,361,000
Discount rate:
Components of cost	4.00%	4.80%
Benefit obligations	4.80%	4.80%
Expected return on plan assets	8.00%	8.00%
Rate of compensation increase

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After tax net amount of gain (loss) that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases (decreases) in other comprehensive income as they arise.

+ References

No definition available.

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- Definition

The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost)

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- Definition

Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

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- Definition

The interest rate used to adjust for the time value of money for the plan.

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Expected rate of compensation increases (for pay-related plans).

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The interest rate used to adjust for the time value of money.

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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- Definition

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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-Glossary Accumulated Postretirement Benefit Obligation

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- Definition

The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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The increase in the fair value of plan assets from contributions made by the employer.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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