Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Balances in the Allowance Accounts

	December 31,
	2011		2010
Current	$	61,804	$	57,385
Non-current (included in other assets, net)		2,850		3,150
	$	64,654	$	60,535

Estimated Useful Lives of the Assets

Furniture and fixtures	5-7 years
Equipment and software	2-5 years
Improvements	5-15 years
Buildings	10-51 years