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Share-Based Compensation (Details Textual) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2010 Stock Appreciation Rights (SARs) [Member]	Dec. 31, 2009 Stock Appreciation Rights (SARs) [Member]	Jun. 30, 2012 Stock Appreciation Rights (SARs) [Member]	Dec. 31, 2011 Stock Appreciation Rights (SARs) [Member]
Share-Based Compensation (Textual) [Abstract]
Stock appreciation rights (SARs) granted					106,750	106,750
Fair value of the liability outstanding shares							87,500	87,500
Fair value of the liability							$ 7,970	$ 10,873
Share-Based Compensation (Additional Textual) [Abstract]
Share-based compensation expense	80,373	112,638	162,901	203,063
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted	$ 341,000		$ 341,000
Weighted-average period over which unrecognized compensation is expected to be recognized			1 year 7 months 6 days
Common stock issued pursuant to option exercises			0	0
Stock options granted			0	524,500
Stock options forfeited			123,233	82,567

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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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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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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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Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest.

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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 shares reserved for issuance under non-option equity instrument agreements awarded that validly exist and are outstanding, including vested instruments.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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

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