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Pension Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Service cost - benefits earned during the period	$ 46	$ 80	$ 125	$ 136
Interest cost	392	435	785	836
Expected return on plan assets	$ (710)	$ (701)	$ (1,418)	$ (1,390)
Amortization of transition obligation
Amortization of net (gain)/loss	$ (16)	$ (56)	$ (47)	$ (110)
Amortization of prior service cost
Net periodic pension cost (income)	$ (288)	$ (242)	$ (555)	$ (528)
Pension Plan [Member]
Service cost - benefits earned during the period
Interest cost	$ 341	$ 382	$ 682	$ 731
Expected return on plan assets	$ (710)	$ (701)	$ (1,418)	$ (1,390)
Amortization of transition obligation
Amortization of net (gain)/loss
Amortization of prior service cost
Net periodic pension cost (income)	$ (369)	$ (319)	$ (736)	$ (659)
SERP [Member]
Service cost - benefits earned during the period	46	80	125	136
Interest cost	$ 51	$ 53	$ 103	$ 105
Expected return on plan assets
Amortization of transition obligation
Amortization of net (gain)/loss	$ (16)	$ (56)	$ (47)	$ (110)
Amortization of prior service cost
Net periodic pension cost (income)	$ 81	$ 77	$ 181	$ 131

X

- Definition

Amount included in accumulated other comprehensive income (AOCI) related to transition obligation (asset) expected to be recognized as components of net periodic benefit cost (credit) for the fiscal year that follows the most recent annual statement of financial position.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 715



-SubTopic 20



-Section 50



-Paragraph 1



-Subparagraph (s)



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- Definition

An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Glossary Expected Return on Plan Assets



-URI http://asc.fasb.org/extlink&oid=6512171



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-Publisher FASB



-Name Accounting Standards Codification



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Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

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Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

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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.

+ References

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-Publisher FASB



-Name Accounting Standards Codification



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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

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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.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Glossary Service Cost (Component of Net Periodic Pension Cost)



-URI http://asc.fasb.org/extlink&oid=6525008



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