Stock Benefit Plans Stock Options Roll Forward (Details) (Stock Options, USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Stock Options
Shares
Outstanding	56,000
Exercisable	55,000
Weighted-Average Remaining Contractual Term (Years)	4 years 2 months 12 days
Weighted Average Exercise Price (in dollars per share)
Outstanding	$ 30.14
Exercisable	$ 30.17
Weighted-Average Remaining Contractual Term (Years)	4 years 2 months 12 days
Aggregate Intrinsic Value
Outstanding	$ 0
Exercisable	$ 0

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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