Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plan	Employee Benefit Plan: The Company sponsors a savings plan under Section 401(k) of the Internal Revenue Code for the majority of its employees. The plan allows employees to contribute a portion of their pretax income in accordance with specified guidelines. In January 2009, the Company adopted a limited matching contribution policy and began matching certain employee contributions to the savings plan. The Company contributed approximately $1.3 million, $1.2 million and $0.9 million to the savings plan during the years ended December 31, 2011, 2010 and 2009, respectively.

The entire disclosure for pension and other postretirement benefits.

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