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Stock-Based Compensation (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Stock-Based Compensation (Additional Textual) [Abstract]
Unrecognized compensation cost related to unvested awards	$ 4.4
Recognized period for of cost of unvested awards	36 months
2005 Stock Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Total aggregate number of shares of common stock that may be issued	3,150,000

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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