Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies [Abstract]

Real Estate Liability Account Activity related to Workforce Reduction

The following table summarizes the activity in the liability account relating to this charge for the following periods:

	December 31,
	2011			2010
	(in thousands)
Balance as of January 1,	$	89,793		$	-
Expense (credit) incurred		(3,506	)		76,177
Deferred rent		2,288			22,954
Payments made		(18,696	)		(9,814	)
Interest accretion		1,285			476
Balance as of end of period	$	71,164		$	89,793