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Benefit Plans	3 Months Ended
Benefit Plans	Mar. 31, 2012
Benefit Plans [Abstract]
Benefit Plans	Benefit Plans The Company recognizes compensation expense relating to options issued under the Company's equity award plan over an average of 5.0 years for the options issued in 2010 and 3.6 years for the options issued in 2008. The Company recognized $346 in compensation expense during each of the three months ended March 31, 2012 and 2011, and has unrecognized compensation costs of $3,409 relating to the outstanding options as of March 31, 2012. During the three months ended March 31, 2012 and 2011, the Company recognized $750 and $472, respectively, in compensation expense relating to scheduled vesting and issuance of common share grants.

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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