Retirement Plans - Expected Annual Benefit Payments (Details) (USD $)	Dec. 31, 2012
Pension plan [Member]
Expected annual benefit payments based on actuarial estimates:
2013	$ 201,000
2014	217,000
2015	294,000
2016	381,000
2017	377,000
2018 - 2020	2,256,000
SERP [Member]
Expected annual benefit payments based on actuarial estimates:
2013	419,000
2014	415,000
2015	409,000
2016	403,000
2017	397,000
2018 - 2020	$ 1,867,000

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Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ 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 (f)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

+ Details

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- Definition

Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

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- Definition

Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

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