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Number of repurchase program.

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Repurchase program approval date.

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Share based compensation arrangement by share based payment award equity instruments other than options increase in nonvested number.

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Stock option and stock appreciation rights contractual life.

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Stock option and stock appreciation rights shares issued.

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Stock options and stock appreciation rights grants in period gross.

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Aggregate cash paid by the entity during the period to settle equity instruments granted under equity-based payment arrangements.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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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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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 equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Number of share options (or share units) exercised during the current period.

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Tax benefits realized from the exercise of stock options resulting in reductions in the entity's income taxes, which increases net cash provided by operating activities.

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Employee Benefits and Stock Compensation (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 18, 2001 Plan
Employee Benefits and Stock Compensation (Textual) [Abstract]
Stock options exercised	0
Windfall tax benefits realized from the exercise of stock options	$ 0
Employee Benefits and Stock Compensation (Additional Textual) [Abstract]
Profit sharing and retirement contributions charged to operations	771,000	361,000	373,000
Profit sharing and retirement plan service period	1 year
Stock options or stock appreciation rights contractual life	10 years
Repurchase Program Approval Date	Sep. 18, 2001
Number of repurchase program				1
Share repurchase program, shares authorized	825,000
Recognized non-cash compensation expense before tax	796,000	588,000	493,000
Maximum remaining number of repurchase Shares under repurchase plan	76,000
Grant of stock options or SSARS	0	0	0
Recognized non-cash compensation expense after tax	489,000	361,000	303,000
Compensation cost capitalized	0
Unrecognized compensation cost of stock options and SAR's	0
Maximum [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Stock awards contractual life period	5 years
Minimum [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Stock awards contractual life period	3 years
Stock Options [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Stock options vesting period	5 years
Cash utilized for settle equity instruments granted under stock option awards	0
Restricted Stock [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Issue of shares of restricted awards	73,000
Restricted stock awards vested	204,000
Restricted stock awards cancelled	56,000
Non-vested restricted stock awards outstanding	899,000
Stock options vesting period	5 years
Increase in Non-vested restricted stock awards outstanding		187,000
Cash utilized to settle equity instruments under stock awards	$ 0
1991 Plan [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Common stock shares authorized under stock plan	990,000
1991 Plan [Member] \| Stock Appreciation Rights (SARs) [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Granted options and stock appreciation rights, Shares	826,000
1996 Plan [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Common stock shares authorized under stock plan	990,000
1996 Plan [Member] \| Stock Appreciation Rights (SARs) [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Granted options and stock appreciation rights, Shares	933,000
2000 Plan [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Common stock shares authorized under stock plan	1,320,000
2000 Plan [Member] \| Stock Appreciation Rights (SARs) [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Granted options and stock appreciation rights, Shares	791,000
2000 Plan [Member] \| Restricted Stock [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Issue of shares of restricted awards			17,000
Issue of shares of restricted awards, price per share			$ 1.90
2008 Plan [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Common stock shares authorized under stock plan	1,500,000
2008 Plan [Member] \| Stock Appreciation Rights (SARs) [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Granted options and stock appreciation rights, Shares	0
2008 Plan [Member] \| Restricted Stock [Member]
Employee Benefits and Stock Compensation (Textual) [Abstract]
Issue of shares of restricted awards	73,000	1,143,400
Issue of shares of restricted awards, price per share	$ 1.62	$ 1.42