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Retirement Plan	12 Months Ended
	Dec. 31, 2011
Retirement Plan [Abstract]
Retirement Plan	19. Retirement Plan We sponsor a qualified tax-deferred savings plan in accordance with the provisions of Section 401(k) of the U.S. Internal Revenue Code, which is available to permanent U.S. employees. We make contributions of up to 4% of eligible employees' salaries.  Our contributions were as follows: 2011 – $63; 2010 – $59; 2009 – $52.

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The entire disclosure for pension and other postretirement benefits.

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