Stock-Based Compensation (Policies)	6 Months Ended
Stock-Based Compensation (Policies)	Jun. 30, 2012
Stock-Based Compensation [Abstract]
Share-based compensation arrangement by share based payment award, method of measuring cost of award	The amount of compensation cost related to stock-based payment transactions is measured based on the grant-date fair value of the equity instruments issued. The fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model. The Company determines compensation cost for restricted stock units (“RSUs”), phantom stock units, and restricted stock based on the grant-date fair value of the underlying common stock. Compensation cost is recognized over the period that an officer, employee, or non-employee director provides service in exchange for the award.

Description of the method used for calculating compensation cost for the award under the plan.