Prepaid and Other Current Assets (Tables)

9 Months Ended

Sep. 30, 2013

Prepaid Expense and Other Assets, Current [Abstract]

Prepaid expense and other current assets

Prepaid and other current assets consist of the following as of (in thousands):

	September 30, 2013		December 31, 2012 (1)
Acquisition deposit in escrow	$	120,000	$	—
Prepaid income tax	65,903		57,665
Prepaid operating ground leases	61,393		56,916
Unbilled receivables	27,922		32,588
Prepaid assets	34,260		19,037
Value added tax and other consumption tax receivables	16,771		22,443
Other miscellaneous current assets	39,543		34,350
Balance	$	365,792	$	222,999

(1) December 31, 2012 balances have been revised to reflect purchase accounting measurement period adjustments.