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Retirement Savings Plans	12 Months Ended
Retirement Savings Plans	Dec. 31, 2014
Compensation And Retirement Disclosure [Abstract]
Retirement Savings Plans	17. Retirement Savings Plans The Company, through its U.S. and U.K. subsidiaries, offers its employees the opportunity to invest in defined contribution plans. For the years ended December 31, 2014, 2013 and 2012, the Company contributed $1.8 million, $1.7 million and $1.1 million, respectively, to the plans.

The entire disclosure for pension and other postretirement benefits.