Earnings Per Common Share And Share Awards (Narrative) (Details) (USD $)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Earnings Per Common Share And Share Awards [Line Items]
Incremental dilutive potential common shares, calculated using treasury stock method	39,198	27,953
Anti-dilutive shares excluded from computation of diluted earnings per share	0	4,500
SARs and options vesting period	1 year
Compensation expense relating to SARs or options vesting	$ 18,000	$ 18,000
Total unrecognized compensation cost related to unvested share-based compensation arrangements granted under stock award plans	$ 7,000
Weighted-average period of unrecognized compensation cost recognition	4 months
Number of stock options or SARs granted where exercise price was less than market price on date of grant	0
Minimum [Member]
Earnings Per Common Share And Share Awards [Line Items]
Annual rate at which stock appreciation rights and options are exercisable and vest	10.00%
SARs and options expiration period	5 years
Maximum [Member]
Earnings Per Common Share And Share Awards [Line Items]
Maximum shares of Company stock to be granted to key employees or directors	500,000
Annual rate at which stock appreciation rights and options are exercisable and vest	20.00%
SARs and options expiration period	10 years

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Number of stock options or SARs granted where exercise price was less than market price on date of grant.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Expiration Period

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Share based compensation arrangement by share based payment award, percentage of exercisable and vesting period

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of shares purchased on the open market during the period for issuance to employees under the plan.

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