Employee Benefit Plans (Schedule of Net Funded Status) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	$ 38,967	$ 38,967	$ 34,848
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, Beginning Balance		28,329	30,340
Defined Benefit Plan, Service Cost		258	227
Defined Benefit Plan, Interest Cost		1,478	1,243
Defined Benefit Plan, Other Changes		7,216	(3,564)
Defined Benefit Plan, Actuarial Gain (Loss)		3,401	1,286
Defined Benefit Plan, Benefits Paid		(1,334)	(1,203)
Defined Benefit Plan, Benefit Obligation, Ending Balance	39,348	39,348	28,329
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance		34,848	31,154
Defined Benefit Plan, Actual Return on Plan Assets		2,453	4,897
Defined Benefit Plan, Contributions by Employer	3,000	3,000	0
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	38,967	38,967	34,848
Defined Benefit Plan, Funded Status of Plan	(381)	(381)	6,519
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, Beginning Balance		5,084	4,990
Defined Benefit Plan, Service Cost		115	113
Defined Benefit Plan, Interest Cost		220	250
Defined Benefit Plan, Other Changes		0	0
Defined Benefit Plan, Actuarial Gain (Loss)		499	(167)
Defined Benefit Plan, Benefits Paid		(91)	(102)
Defined Benefit Plan, Benefit Obligation, Ending Balance	5,827	5,827	5,084
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance		0	0
Defined Benefit Plan, Actual Return on Plan Assets		0	0
Defined Benefit Plan, Contributions by Employer		91	102
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	0	0	0
Defined Benefit Plan, Funded Status of Plan	$ (5,827)	$ (5,827)	$ (5,084)

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.

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)

-URI http://asc.fasb.org/extlink&oid=6504192

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 715

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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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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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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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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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Changes in the defined benefit obligation, not otherwise separately disclosed in the financial statements.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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