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Other Current Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Prepaid Expense And Other Assets Current [Abstract]    
Prepaid expenses $ 105,216 $ 102,466
Funds on deposit with third parties 82,679 81,276
Other 2,427 3,100
Other current assets $ 190,322 $ 186,842