Composition of Certain Financial Statement Captions (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Other Current Assets, Accounts Payable, Accrued Liabilities and Other Liabilities

The following table presents the components of “Other current assets”, “Accounts payable and accrued liabilities” and “Other liabilities” as of December 31:

	2012		2011
Other current assets:
Acquisition related escrows	$	29,277	$	36,967
Other current assets		9,832		4,281
Total other current assets	$	39,109	$	41,248
Accounts payable and accrued liabilities:
Accrued salaries, benefits and other related costs	$	78,979	$	66,354
Escrow liabilities		28,954		30,899
Other current liabilities		79,715		65,739
Total accounts payable and accrued liabilities	$	187,648	$	162,992
Other liabilities:
Unrecognized tax benefits, including interest and penalty	$	21,611	$	22,567
Deferred rent		12,919		13,575
Other liabilities		43,660		25,724
Total other liabilities	$	78,190	$	61,866