Other Receivables and Current Assets - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Other receivables and current assets	$ 180,471	$ 200,233
Deferred Accounts Receivable Current Portion Of Annual Lease Licenses And Software Maintenance [Member]
Other receivables and current assets	125,076	170,186
Taxes Receivable Related To Overpayments And Refunds [Member]
Other receivables and current assets	30,412	7,877
Prepaid Expenses and Other Current Assets [Member]
Other receivables and current assets	$ 24,983	$ 22,170